221997
Everything about the number 221997 — its names, how to write it in other bases and numeral systems, and what makes it interesting mathematically.
Names of 221997
| Nominal | 221997 |
| Cardinal | two hundred twenty-one thousand nine hundred ninety-seven |
| Ordinal | 221,997th |
| This number as US currency | two hundred twenty-one thousand nine hundred ninety-seven dollars |
Properties (and some facts) of 221997
| Is 221997 an odd number? | 221997 is an odd number |
| Is 221997 an even number? | 221997 is not an even number |
| Is 221997 a palindrome? | 221997 is not a palindrome |
| Is 221997 a triangle number? | 221997 is not a triangle number |
221997 in other bases
| Base 2 (Binary) | 110110001100101101 |
| Base 3 (Ternary) | 102021112010 |
| Base 4 (Quaternary) | 312030231 |
| Base 5 (Quinary) | 24100442 |
| Base 6 (Senary) | 4431433 |
| Base 8 (Octal) | 661455 |
| Base 12 (Duodecimal) | A8579 |
| Base 16 (Hexadecimal) | 3632D |
| Base 20 (Vigesimal) | 17EJH |
Primes and factors tests for 221997
| Is 221997 a prime number? | 221997 is not a prime number |
| Is 221997 a perfect number? | 221997 is not a perfect number |
| Is 221997 a Mersenne prime? | 221997 is not a Mersenne prime |
| Is 221997 a Fermat prime? | 221997 is not a Fermat prime |
| Is 221997 a Fibonacci prime? | 221997 is not a Fibonacci prime |
| Is 221997 a partition prime? | 221997 is not a partition prime |
| Is 221997 a Pell prime? | 221997 is not a Pell prime |
| Prime Factors | Prime factors of 221997 |
221997 in other numeral systems
| 221997 in Roman numerals | CCXXMCMXCVII |
| 221997 in Chinese numerals | 貳拾萬貳萬壹仟玖佰玖拾柒 |
| 221997 in Babylonian numerals |    |
| 221997 in Egyptian numerals | 𓆐𓆐𓂮𓆼𓍪𓎎𓐀 |
Roots and squares for 221997
| Is 221997 a square number? | 221997 is not a square number |
| Is 221997 a cube number? | 221997 is not a cube number |
| Square root of 221997 | 471.16557599213 |
| Cube root of 221997 | 60.55021671393 |
Recreational math for 221997
| Number 221997 reversed | 799122 |
| Sum of the digits | 30 |
| Number of digits | 6 |