Names of 12821
| Nominal | 12821 |
| Cardinal | twelve thousand eight hundred twenty-one |
| Ordinal | 12,821st |
| This number as US currency | twelve thousand eight hundred twenty-one dollars |
| Is 12821 an odd number? | 12821 is an odd number |
| Is 12821 an even number? | 12821 is NOT an even number |
| Is 12821 a palindrome? | 12821 is a palindrome number |
| Is 12821 a triangle number? | 12821 is NOT a triangle number |
12821 in other Bases
| Base 2 (Binary) | 110010000101012 |
| Base 3 (Ternary) | 1221202123 |
| Base 4 (Quaternary) | 30201114 |
| Base 5 (Quinary) | 4022415 |
| Base 6 (Senary) | 1352056 |
| Base 8 (Octal) | 310258 |
| Base 12 (Duodecimal) | 750512 |
| Base 16 (Hexadecimal) | 321516 |
| Base 20 (Vigesimal) | 1C1120 |
Primes and Factors tests for 12821
| Is 12821 a Prime Number? | 12821 is a prime |
| Is 12821 a perfect number? | 12821 is NOT a perfect number |
| Is 12821 a Mersenne Prime? | 12821 is NOT a Mersenne prime |
| Is 12821 a Fermat Prime? | 12821 is NOT a Fermat prime |
| Is 12821 a Fibonacci Prime? | 12821 is NOT a Fibonacci prime |
| Is 12821 a Partition Prime? | 12821 is NOT a Partition prime |
| Is 12821 a Pell Prime? | 12821 is NOT a Pell prime |
| Prime Factors | Prime factors of 12821 |
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12821 in other Numerals
| 12821 in Roman Numeral | XMMDCCCXXI |
| 12821 in Chinese Numeral | 壹萬貳仟捌佰貳拾壹 |
| 12821 in Egyptian Numeral | 𓂭𓆽𓍩𓎇𓏺 |
| 12821 in Babylonian Numeral |    |
Roots and stuff for 12821
| Is 12821 a square number? | 12821 is NOT a square number |
| Is 12821 a cube number? | 12821 is NOT a cube number |
| Square root of the number 12821 | 113.22985472039 |
| Cube root of the number 12821 | 23.404927493736 |
Recreational math for 12821
| Number 12821 reversed | 12821 |
| Sum of the digits | 14 |
| No of digits | 5 |