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 |
| 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 number |
| Is 221998 a triangle number? | 221998 is NOT a triangle number |
221998 in other Bases
| Base 2 (Binary) | 1101100011001011102 |
| Base 3 (Ternary) | 1020211120113 |
| Base 4 (Quaternary) | 3120302324 |
| Base 5 (Quinary) | 241004435 |
| Base 6 (Senary) | 44314346 |
| Base 8 (Octal) | 6614568 |
| Base 12 (Duodecimal) | A857A12 |
| Base 16 (Hexadecimal) | 3632E16 |
| Base 20 (Vigesimal) | 17EJI20 |
Primes and Factors tests for 221998
| Is 221998 a Prime Number? | 221998 is NOT a prime |
| 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 |
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221998 in other Numerals
| 221998 in Roman Numeral | CCXXMCMXCVIII |
| 221998 in Chinese Numeral | 貳拾萬貳萬壹仟玖佰玖拾捌 |
| 221998 in Egyptian Numeral | 𓆐𓆐𓂮𓆼𓍪𓎎𓐁 |
| 221998 in Babylonian Numeral |    |
Roots and stuff 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 the number 221998 | 471.16663718901 |
| Cube root of the number 221998 | 60.550307631263 |
Recreational math for 221998
| Number 221998 reversed | 899122 |
| Sum of the digits | 31 |
| No of digits | 6 |