Names of 12121
| Nominal | 12121 |
| Cardinal | twelve thousand one hundred twenty-one |
| Ordinal | 12,121st |
| This number as US currency | twelve thousand one hundred twenty-one dollars |
| Is 12121 an odd number? | 12121 is an odd number |
| Is 12121 an even number? | 12121 is NOT an even number |
| Is 12121 a palindrome? | 12121 is a palindrome number |
| Is 12121 a triangle number? | 12121 is NOT a triangle number |
12121 in other Bases
| Base 2 (Binary) | 101111010110012 |
| Base 3 (Ternary) | 1211212213 |
| Base 4 (Quaternary) | 23311214 |
| Base 5 (Quinary) | 3414415 |
| Base 6 (Senary) | 1320416 |
| Base 8 (Octal) | 275318 |
| Base 12 (Duodecimal) | 702112 |
| Base 16 (Hexadecimal) | 2F5916 |
| Base 20 (Vigesimal) | 1A6120 |
Primes and Factors tests for 12121
| Is 12121 a Prime Number? | 12121 is NOT a prime |
| Is 12121 a perfect number? | 12121 is NOT a perfect number |
| Is 12121 a Mersenne Prime? | 12121 is NOT a Mersenne prime |
| Is 12121 a Fermat Prime? | 12121 is NOT a Fermat prime |
| Is 12121 a Fibonacci Prime? | 12121 is NOT a Fibonacci prime |
| Is 12121 a Partition Prime? | 12121 is NOT a Partition prime |
| Is 12121 a Pell Prime? | 12121 is NOT a Pell prime |
| Prime Factors | Prime factors of 12121 |
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12121 in other Numerals
| 12121 in Roman Numeral | XMMCXXI |
| 12121 in Chinese Numeral | 壹萬貳仟壹佰貳拾壹 |
| 12121 in Egyptian Numeral | 𓂭𓆽𓍢𓎇𓏺 |
| 12121 in Babylonian Numeral |    |
Roots and stuff for 12121
| Is 12121 a square number? | 12121 is NOT a square number |
| Is 12121 a cube number? | 12121 is NOT a cube number |
| Square root of the number 12121 | 110.09541316513 |
| Cube root of the number 12121 | 22.970977887155 |
Recreational math for 12121
| Number 12121 reversed | 12121 |
| Sum of the digits | 7 |
| No of digits | 5 |