| Nominal | 21970 |
| Cardinal | twenty-one thousand nine hundred seventy |
Cardinal twenty-one thousand nine hundred seventy | |
| Ordinal | 21,970th |
| Number of digits | 5 |
| Sum of digits | 19 |
| Product of digits | 0 |
| Number parity | Even |
| Prime factorization | 2 x 5 x 13 x 13 x 13 |
| Prime factorization in exponent form | 2 x 5 x 133 |
| Prime factors | 2, 5, 13 |
| Number of distinct prime factors ω(n) | 3 |
| Total number of prime factors Ω(n) | 5 |
| Sum of prime factors | 20 |
| Product of prime factors | 130 |
| Is 21970 a prime number? | No |
| Is 21970 a semiprime number? | No |
| Is 21970 a Chen prime number? | No |
| Is 21970 a Mersenne prime number? | No |
| Is 21970 a Catalan number? | No |
| Is 21970 a Fibonacci number? | No |
| Is 21970 a Idoneal number? | No |
| Square of 21970 (n2) | 482680900 |
| Cube of 21970 (n3) | 10604499373000 |
| Square root of 21970 | 148.22280526289 |
| Natural Logarithm (ln) of 21970 | 9.9974331653787 |
| Decimal Logarithm (log) of 21970 | 4.3418300569205 |
| Sine of 21970 | -0.74635833225307 |
| Cosecant of 21970 | -1.3398389979532 |
| Cosine of 21970 | -0.66554431849158 |
| Secant of 21970 | -1.5025295419341 |
| Tangent of 21970 | 1.1214254430789 |
| Cotangent of 21970 | 0.89172223278123 |
| The spelling of 21970 in words is "twenty-one thousand nine hundred seventy", meaning that: |
| 21970 is not an aban number (as it contains the letter a) |
| 21970 is not an eban number (as it contains the letter e) |
| 21970 is not an iban number (as it contains the letter i) |
| 21970 is not an oban number (as it contains the letter o) |
| 21970 is not a tban number (as it contains the letter t) |
| 21970 is not an uban number (as it contains the letter u) |
| Bengali numerals | ২১৯৭০ |
| Eastern Arabic numerals | ٢١٬٩٧٠ |
| Hieroglyphs numeralsused in Ancient Egypt | 𓂭𓂭𓆼𓍪𓎌 |
| Khmer numerals | ២១៩៧០ |
| Japanese numerals | 二万千九百七十 |
| Roman numerals | n/a |
| Thai numerals | ๒๑๙๗๐ |
| Arabic | واحد و عشرون ألف و تسعة مائة و سبعون |
| Croatian | dvadeset i jedna tisuća devetsto sedamdeset |
| Czech | dvacet jedna tisíc devět set sedmdesát |
| Danish | en og tyve tusinde ni hundrede halvfjerds |
| Dutch | éénentwintigduizend negenhonderdzeventig |
| Estonian | akpe blaeve vɔ ɖekɛ alafa asieke kple blaadre |
| Faroese | tjúgoeitt tusin og níggjuhundraðogsjeyti |
| Filipino | dalawáng pû’t isáng libó’t siyám na daán at pitóng pû |
| Finnish | kaksikymmentäyksituhattayhdeksänsataaseitsemänkymmentä |
| French | vingt et un mille neuf cent soixante-dix |
| Greek | είκοσι μία χίλιάδες εννιακόσια εβδομήντα |
| German | einundzwanzigtausendneunhundertsiebzig |
| Hebrew | עשרים ואחד אלף תשע מאות שבעים |
| Hindi | इक्कीस हज़ार नौ सौ सत्तर |
| Hungarian | huszonegyezerkilencszázhetven |
| Icelandic | tuttugu og eitt þúsund og níuhundrað og sjötíu |
| Indonesian | dua puluh satu ribu sembilan ratus tujuh puluh |
| Italian | ventunomilanovecentosettanta |
| Japanese | 二万千九百七十 |
| Korean | 이만 천구백칠십 |
| Latvian | divdesmit viens tūkstoši deviņsimt septiņdesmit |
| Lithuanian | dvidešimt vienas tūkstantis devyni šimtai septyniasdešimt |
| Norwegian | tjueett tusen ni hundre og sytti |
| Persian | بیست و یک هزار و نهصد و هفتاد |
| Polish | dwadzieścia jeden tysięcy dziewięćset siedemdziesiąt |
| Portuguese | vinte e um mil novecentos e setenta |
| Romanian | douăzeci şi una mii nouă sute şaptezeci |
| Russian | двадцать одна тысяча девятьсот семьдесят |
| Serbian | двадесет и једна хиљада деветсто седамдесет |
| Slovak | dvadsaťjedna tisíc deväťsto sedemdesiat |
| Slovene | dvaset ena tisuću devetsto sedemdeset |
| Spanish | veintiún mil novecientos setenta |
| Swahili | elfu ishirini na moja, mia tisa na sabini |
| Swedish | tjugoentusenniohundrasjutio |
| Thai | สองหมื่นหนึ่งพันเก้าร้อยเจ็ดสิบ |
| Turkish | yirmi bir bin dokuz yüz yetmiş |
| Ukrainian | двадцять одна тисяча девʼятсот сімдесят |
| Vietnamese | hai mươi mốt nghìn chín trăm bảy mươi |
| Number 21970 reversed | 07912 | |
| Unicode Character | U+55D2 | 嗒 |
| Unix Timestamp | Thu, 01 Jan 1970 06:06:10 +0000 | |