Names of 12
| Nominal | 12 |
| Cardinal | twelve |
| Ordinal | 12th |
| This number as US currency | twelve dollars |
| Is 12 an odd number? | 12 is NOT an odd number |
| Is 12 an even number? | 12 is an even number |
| Is 12 a palindrome? | 12 is NOT a palindrome number |
| Is 12 a triangle number? | 12 is NOT a triangle number |
12 in other Bases
| Base 2 (Binary) | 11002 |
| Base 3 (Ternary) | 1103 |
| Base 4 (Quaternary) | 304 |
| Base 5 (Quinary) | 225 |
| Base 6 (Senary) | 206 |
| Base 8 (Octal) | 148 |
| Base 12 (Duodecimal) | 1012 |
| Base 16 (Hexadecimal) | C16 |
| Base 20 (Vigesimal) | C20 |
Primes and Factors tests for 12
| Is 12 a Prime Number? | 12 is NOT a prime |
| Is 12 a perfect number? | 12 is NOT a perfect number |
| Is 12 a Mersenne Prime? | 12 is NOT a Mersenne prime |
| Is 12 a Fermat Prime? | 12 is NOT a Fermat prime |
| Is 12 a Fibonacci Prime? | 12 is NOT a Fibonacci prime |
| Is 12 a Partition Prime? | 12 is NOT a Partition prime |
| Is 12 a Pell Prime? | 12 is NOT a Pell prime |
| Prime Factors | Prime factors of 12 |
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12 in other Numerals
| 12 in Roman Numeral | XII |
| 12 in Chinese Numeral | 壹拾貳 |
| 12 in Egyptian Numeral | 𓎆𓏻 |
| 12 in Babylonian Numeral |  |
Roots and stuff for 12
| Is 12 a square number? | 12 is NOT a square number |
| Is 12 a cube number? | 12 is NOT a cube number |
| Square root of the number 12 | 3.4641016151378 |
| Cube root of the number 12 | 2.2894284851067 |
Recreational math for 12
| Number 12 reversed | 21 |
| Sum of the digits | 3 |
| No of digits | 2 |