221998
Everything about the number 221998 — its names, how to write it in other bases and numeral systems, and what makes it interesting mathematically.
Names of 221998
| Nominal | 221998 |
| Cardinal | two hundred twenty-one thousand nine hundred ninety-eight |
| Ordinal | 221,998th |
| This number as US currency | two hundred twenty-one thousand nine hundred ninety-eight dollars |
Properties (and some facts) of 221998
| Is 221998 an odd number? | 221998 is not an odd number |
| Is 221998 an even number? | 221998 is an even number |
| Is 221998 a palindrome? | 221998 is not a palindrome |
| Is 221998 a triangle number? | 221998 is not a triangle number |
221998 in other bases
| Base 2 (Binary) | 110110001100101110 |
| Base 3 (Ternary) | 102021112011 |
| Base 4 (Quaternary) | 312030232 |
| Base 5 (Quinary) | 24100443 |
| Base 6 (Senary) | 4431434 |
| Base 8 (Octal) | 661456 |
| Base 12 (Duodecimal) | A857A |
| Base 16 (Hexadecimal) | 3632E |
| Base 20 (Vigesimal) | 17EJI |
Primes and factors tests for 221998
| Is 221998 a prime number? | 221998 is not a prime number |
| Is 221998 a perfect number? | 221998 is not a perfect number |
| Is 221998 a Mersenne prime? | 221998 is not a Mersenne prime |
| Is 221998 a Fermat prime? | 221998 is not a Fermat prime |
| Is 221998 a Fibonacci prime? | 221998 is not a Fibonacci prime |
| Is 221998 a partition prime? | 221998 is not a partition prime |
| Is 221998 a Pell prime? | 221998 is not a Pell prime |
| Prime Factors | Prime factors of 221998 |
221998 in other numeral systems
| 221998 in Roman numerals | CCXXMCMXCVIII |
| 221998 in Chinese numerals | 貳拾萬貳萬壹仟玖佰玖拾捌 |
| 221998 in Babylonian numerals |    |
| 221998 in Egyptian numerals | 𓆐𓆐𓂮𓆼𓍪𓎎𓐁 |
Roots and squares for 221998
| Is 221998 a square number? | 221998 is not a square number |
| Is 221998 a cube number? | 221998 is not a cube number |
| Square root of 221998 | 471.16663718901 |
| Cube root of 221998 | 60.550307631263 |
Recreational math for 221998
| Number 221998 reversed | 899122 |
| Sum of the digits | 31 |
| Number of digits | 6 |