| Nominal | 21216 |
| Cardinal | twenty-one thousand two hundred sixteen |
Cardinal twenty-one thousand two hundred sixteen | |
| Ordinal | 21,216th |
| Number of digits | 5 |
| Sum of digits | 12 |
| Product of digits | 24 |
| Number parity | Even |
| Prime factorization | 2 x 2 x 2 x 2 x 2 x 3 x 13 x 17 |
| Prime factorization in exponent form | 25 x 3 x 13 x 17 |
| Prime factors | 2, 3, 13, 17 |
| Number of distinct prime factors ω(n) | 4 |
| Total number of prime factors Ω(n) | 8 |
| Sum of prime factors | 35 |
| Product of prime factors | 1326 |
| Is 21216 a prime number? | No |
| Is 21216 a semiprime number? | No |
| Is 21216 a Chen prime number? | No |
| Is 21216 a Mersenne prime number? | No |
| Is 21216 a Catalan number? | No |
| Is 21216 a Fibonacci number? | No |
| Is 21216 a Idoneal number? | No |
| Square of 21216 (n2) | 450118656 |
| Cube of 21216 (n3) | 9549717405696 |
| Square root of 21216 | 145.65713164826 |
| Natural Logarithm (ln) of 21216 | 9.9625108929856 |
| Decimal Logarithm (log) of 21216 | 4.3266635067247 |
| Sine of 21216 | -0.73441905228948 |
| Cosecant of 21216 | -1.3616204493642 |
| Cosine of 21216 | -0.67869629115991 |
| Secant of 21216 | -1.4734130906933 |
| Tangent of 21216 | 1.0821026456979 |
| Cotangent of 21216 | 0.92412674895094 |
| The spelling of 21216 in words is "twenty-one thousand two hundred sixteen", meaning that: |
| 21216 is not an aban number (as it contains the letter a) |
| 21216 is not an eban number (as it contains the letter e) |
| 21216 is not an iban number (as it contains the letter i) |
| 21216 is not an oban number (as it contains the letter o) |
| 21216 is not a tban number (as it contains the letter t) |
| 21216 is not an uban number (as it contains the letter u) |
| Bengali numerals | ২১২১৬ |
| Eastern Arabic numerals | ٢١٬٢١٦ |
| Hieroglyphs numeralsused in Ancient Egypt | 𓂭𓂭𓆼𓍣𓎆𓏿 |
| Khmer numerals | ២១២១៦ |
| Japanese numerals | 二万千二百十六 |
| Roman numerals | n/a |
| Thai numerals | ๒๑๒๑๖ |
| Arabic | واحد و عشرون ألف و مائتان و ستة عشر |
| Croatian | dvadeset i jedna tisuća dvjesto šesnaest |
| Czech | dvacet jedna tisíc dvě stě šestnáct |
| Danish | en og tyve tusinde to hundrede seksten |
| Dutch | éénentwintigduizend tweehonderdzestien |
| Estonian | akpe blaeve vɔ ɖekɛ alafa eve kple wuiade |
| Faroese | tjúgoeitt tusin og tveyhundraðogsekstan |
| Filipino | dalawáng pû’t isáng libó’t dalawáng daán at labíng-anim |
| Finnish | kaksikymmentäyksituhattakaksisataakuusitoista |
| French | vingt et un mille deux cent seize |
| Greek | είκοσι μία χίλιάδες διακόσια δεκαέξι |
| German | einundzwanzigtausendzweihundertsechzehn |
| Hebrew | עשרים ואחד אלף מאתיים ושש עשרה |
| Hindi | इक्कीस हज़ार दो सौ सोलह |
| Hungarian | huszonegyezerkétszáztizenhat |
| Icelandic | tuttugu og eitt þúsund og tvöhundrað og sextán |
| Indonesian | dua puluh satu ribu dua ratus enam belas |
| Italian | ventunomiladuecentosedici |
| Japanese | 二万千二百十六 |
| Korean | 이만 천이백십육 |
| Latvian | divdesmit viens tūkstoši divsimt sešpadsmit |
| Lithuanian | dvidešimt vienas tūkstantis du šimtai šešiolika |
| Norwegian | tjueett tusen to hundre og seksten |
| Persian | بیست و یک هزار و دویست و شانزده |
| Polish | dwadzieścia jeden tysięcy dwieście szesnaście |
| Portuguese | vinte e um mil duzentos e dezesseis |
| Romanian | douăzeci şi una mii două sute şasesprezece |
| Russian | двадцать одна тысяча двести шестнадцать |
| Serbian | двадесет и једна хиљада двеста шеснаест |
| Slovak | dvadsaťjedna tisíc dvesto šestnásť |
| Slovene | dvaset ena tisuću dvjesto šestnajst |
| Spanish | veintiún mil doscientos dieciseis |
| Swahili | elfu ishirini na moja, mia mbili na kumi na sita |
| Swedish | tjugoentusentvåhundrasexton |
| Thai | สองหมื่นหนึ่งพันสองร้อยสิบหก |
| Turkish | yirmi bir bin iki yüz on altı |
| Ukrainian | двадцять одна тисяча двісті шістнадцять |
| Vietnamese | hai mươi mốt nghìn hai trăm mười sáu |
| Number 21216 reversed | 61212 | |
| Unicode Character | U+52E0 | 勠 |
| Unix Timestamp | Thu, 01 Jan 1970 05:53:36 +0000 | |