Names of 121981
| Nominal | 121981 |
| Cardinal | one hundred twenty-one thousand nine hundred eighty-one |
| Ordinal | 121,981st |
| This number as US currency | one hundred twenty-one thousand nine hundred eighty-one dollars |
| Is 121981 an odd number? | 121981 is an odd number |
| Is 121981 an even number? | 121981 is NOT an even number |
| Is 121981 a palindrome? | 121981 is NOT a palindrome number |
| Is 121981 a triangle number? | 121981 is NOT a triangle number |
121981 in other Bases
| Base 2 (Binary) | 111011100011111012 |
| Base 3 (Ternary) | 200120222113 |
| Base 4 (Quaternary) | 1313013314 |
| Base 5 (Quinary) | 124004115 |
| Base 6 (Senary) | 23404216 |
| Base 8 (Octal) | 3561758 |
| Base 12 (Duodecimal) | 5A71112 |
| Base 16 (Hexadecimal) | 1DC7D16 |
| Base 20 (Vigesimal) | F4J120 |
Primes and Factors tests for 121981
| Is 121981 a Prime Number? | 121981 is NOT a prime |
| Is 121981 a perfect number? | 121981 is NOT a perfect number |
| Is 121981 a Mersenne Prime? | 121981 is NOT a Mersenne prime |
| Is 121981 a Fermat Prime? | 121981 is NOT a Fermat prime |
| Is 121981 a Fibonacci Prime? | 121981 is NOT a Fibonacci prime |
| Is 121981 a Partition Prime? | 121981 is NOT a Partition prime |
| Is 121981 a Pell Prime? | 121981 is NOT a Pell prime |
| Prime Factors | Prime factors of 121981 |
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121981 in other Numerals
| 121981 in Roman Numeral | CXXMCMLXXXI |
| 121981 in Chinese Numeral | 壹拾萬貳萬壹仟玖佰捌拾壹 |
| 121981 in Egyptian Numeral | 𓆐𓂮𓆼𓍪𓎍𓏺 |
| 121981 in Babylonian Numeral |    |
Roots and stuff for 121981
| Is 121981 a square number? | 121981 is NOT a square number |
| Is 121981 a cube number? | 121981 is NOT a cube number |
| Square root of the number 121981 | 349.25778445154 |
| Cube root of the number 121981 | 49.594181809736 |
Recreational math for 121981
| Number 121981 reversed | 189121 |
| Sum of the digits | 22 |
| No of digits | 6 |