10001221
Everything about the number 10001221 — its names, how to write it in other bases and numeral systems, and what makes it interesting mathematically.
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Names of 10001221
| Nominal | 10001221 |
| Cardinal | ten million one thousand two hundred twenty-one |
| Ordinal | 10,001,221st |
| This number as US currency | ten million one thousand two hundred twenty-one dollars |
Properties (and some facts) of 10001221
| Is 10001221 an odd number? | 10001221 is an odd number |
| Is 10001221 an even number? | 10001221 is not an even number |
| Is 10001221 a palindrome? | 10001221 is not a palindrome |
| Is 10001221 a triangle number? | 10001221 is not a triangle number |
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10001221 in other bases
| Base 2 (Binary) | 100110001001101101000101 |
| Base 3 (Ternary) | 200211010002121 |
| Base 4 (Quaternary) | 212021231011 |
| Base 5 (Quinary) | 10030014341 |
| Base 6 (Senary) | 554205541 |
| Base 8 (Octal) | 46115505 |
| Base 12 (Duodecimal) | 34238B1 |
| Base 16 (Hexadecimal) | 989B45 |
| Base 20 (Vigesimal) | 32A311 |
Primes and factors tests for 10001221
| Is 10001221 a prime number? | 10001221 is a prime number |
| Is 10001221 a perfect number? | 10001221 is not a perfect number |
| Is 10001221 a Mersenne prime? | 10001221 is not a Mersenne prime |
| Is 10001221 a Fermat prime? | 10001221 is not a Fermat prime |
| Is 10001221 a Fibonacci prime? | 10001221 is not a Fibonacci prime |
| Is 10001221 a partition prime? | 10001221 is not a partition prime |
| Is 10001221 a Pell prime? | 10001221 is not a Pell prime |
10001221 in other numeral systems
| 10001221 in Roman numerals | MCCXXI |
| 10001221 in Chinese numerals | 壹仟貳佰貳拾壹 |
| 10001221 in Babylonian numerals |     |
Roots and squares for 10001221
| Is 10001221 a square number? | 10001221 is not a square number |
| Is 10001221 a cube number? | 10001221 is not a cube number |
| Square root of 10001221 | 3162.4707113268 |
| Cube root of 10001221 | 215.45223719552 |
Recreational math for 10001221
| Number 10001221 reversed | 12210001 |
| Sum of the digits | 7 |
| Number of digits | 8 |
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