| Nominal | 12891 |
| Cardinal | twelve thousand eight hundred ninety-one |
Cardinal twelve thousand eight hundred ninety-one | |
| Ordinal | 12,891st |
| Number of digits | 5 |
| Sum of digits | 21 |
| Product of digits | 144 |
| Number parity | Odd |
| Prime factorization | 3 x 4297 |
| Prime factors | 3, 4297 |
| Number of distinct prime factors ω(n) | 2 |
| Total number of prime factors Ω(n) | 2 |
| Sum of prime factors | 4300 |
| Product of prime factors | 12891 |
| Is 12891 a prime number? | No |
| Is 12891 a semiprime number? | Yes |
| Is 12891 a Chen prime number? | No |
| Is 12891 a Mersenne prime number? | No |
| Is 12891 a Catalan number? | No |
| Is 12891 a Fibonacci number? | No |
| Is 12891 a Idoneal number? | No |
| Square of 12891 (n2) | 166177881 |
| Cube of 12891 (n3) | 2142199063971 |
| Square root of 12891 | 113.53853971229 |
| Natural Logarithm (ln) of 12891 | 9.4642846724431 |
| Decimal Logarithm (log) of 12891 | 4.1102866084036 |
| Sine of 12891 | -0.86509629888063 |
| Cosecant of 12891 | -1.1559406753837 |
| Cosine of 12891 | -0.50160581502116 |
| Secant of 12891 | -1.9935973030094 |
| Tangent of 12891 | 1.7246536482918 |
| Cotangent of 12891 | 0.57982656459194 |
| The spelling of 12891 in words is "twelve thousand eight hundred ninety-one", meaning that: |
| 12891 is not an aban number (as it contains the letter a) |
| 12891 is not an eban number (as it contains the letter e) |
| 12891 is not an iban number (as it contains the letter i) |
| 12891 is not an oban number (as it contains the letter o) |
| 12891 is not a tban number (as it contains the letter t) |
| 12891 is not an uban number (as it contains the letter u) |
| Bengali numerals | ১২৮৯১ |
| Eastern Arabic numerals | ١٢٬٨٩١ |
| Hieroglyphs numeralsused in Ancient Egypt | 𓂭𓆼𓆼𓍩𓎎𓏺 |
| Khmer numerals | ១២៨៩១ |
| Japanese numerals | 一万二千八百九十一 |
| Roman numerals | n/a |
| Thai numerals | ๑๒๘๙๑ |
| Arabic | إثنا عشر ألف و ثمانية مائة و واحد و تسعون |
| Croatian | dvanaest tisuća osamsto devedeset i jedan |
| Czech | dvanáct tisíc osm set devadesát jeden |
| Danish | tolv tusinde otte hundrede en og halvfems |
| Dutch | twaalfduizend achthonderdéénennegentig |
| Estonian | akpe wuieve alafa enyi blaasieke vɔ ɖekɛ |
| Faroese | tólv tusin og áttahundraðognítiein |
| Filipino | labíng-dalawáng libó’t walóng daán at siyám na pû’t isá |
| Finnish | kaksitoistatuhattakahdeksansataayhdeksänkymmentäyksi |
| French | douze mille huit cent quatre-vingt-onze |
| Greek | δώδεκα χίλιάδες οκτακόσια εννενήντα ένα |
| German | zwölftausendachthunderteinundneunzig |
| Hebrew | שניים עשר אלף שמונה מאות תשעים ואחת |
| Hindi | बारह हज़ार आठ सौ इक्यानबे |
| Hungarian | tizenkettőezernyolcszázkilencvenegy |
| Icelandic | tólf þúsund og áttahundrað og níutíu og einn |
| Indonesian | dua belas ribu delapan ratus sembilan puluh satu |
| Italian | dodicimilaottocentonovantuno |
| Japanese | 一万二千八百九十一 |
| Korean | 만 이천팔백구십일 |
| Latvian | divpadsmit tūkstoši astoņsimt deviņdesmit viens |
| Lithuanian | dvylika tūkstančių aštuoni šimtai devyniasdešimt vienas |
| Norwegian | tolv tusen åtte hundre og nittién |
| Persian | دوازده هزار و هشتصد و نود و یک |
| Polish | dwanaście tysięcy osiemset dziewięćdziesiąt jeden |
| Portuguese | doze mil oitocentos e noventa e um |
| Romanian | douăsprezece mii opt sute nouăzeci şi unu |
| Russian | двенадцать тысяч восемьсот девяносто один |
| Serbian | дванаест хиљада осамсто деведесет и један |
| Slovak | dvanásť tisíc osemsto deväťdesiatjeden |
| Slovene | dvanajst tisuću osemsto devetdeset ena |
| Spanish | doce mil ochocientos noventa y uno |
| Swahili | elfu kumi na mbili, mia nane na tisini na moja |
| Swedish | tolvtusenåttahundranittioen |
| Thai | หนึ่งหมื่นสองพันแปดร้อยเก้าสิบเอ็ด |
| Turkish | on iki bin sekiz yüz doksan bir |
| Ukrainian | дванадцять тисяч вісімсот девʼяносто один |
| Vietnamese | mười hai nghìn tám trăm chín mươi mốt |
| Number 12891 reversed | 19821 | |
| Unicode Character | U+325B | ㉛ |
| Unix Timestamp | Thu, 01 Jan 1970 03:34:51 +0000 | |