222221
Everything about the number 222221 — its names, how to write it in other bases and numeral systems, and what makes it interesting mathematically.
Names of 222221
| Nominal | 222221 |
| Cardinal | two hundred twenty-two thousand two hundred twenty-one |
| Ordinal | 222,221st |
| This number as US currency | two hundred twenty-two thousand two hundred twenty-one dollars |
Properties (and some facts) of 222221
| Is 222221 an odd number? | 222221 is an odd number |
| Is 222221 an even number? | 222221 is not an even number |
| Is 222221 a palindrome? | 222221 is not a palindrome |
| Is 222221 a triangle number? | 222221 is not a triangle number |
222221 in other bases
| Base 2 (Binary) | 110110010000001101 |
| Base 3 (Ternary) | 102021211102 |
| Base 4 (Quaternary) | 312100031 |
| Base 5 (Quinary) | 24102341 |
| Base 6 (Senary) | 4432445 |
| Base 8 (Octal) | 662015 |
| Base 12 (Duodecimal) | A8725 |
| Base 16 (Hexadecimal) | 3640D |
| Base 20 (Vigesimal) | 17FB1 |
Primes and factors tests for 222221
| Is 222221 a prime number? | 222221 is not a prime number |
| Is 222221 a perfect number? | 222221 is not a perfect number |
| Is 222221 a Mersenne prime? | 222221 is not a Mersenne prime |
| Is 222221 a Fermat prime? | 222221 is not a Fermat prime |
| Is 222221 a Fibonacci prime? | 222221 is not a Fibonacci prime |
| Is 222221 a partition prime? | 222221 is not a partition prime |
| Is 222221 a Pell prime? | 222221 is not a Pell prime |
| Prime Factors | Prime factors of 222221 |
222221 in other numeral systems
| 222221 in Roman numerals | CCXXMMCCXXI |
| 222221 in Chinese numerals | 貳拾萬貳萬貳仟貳佰貳拾壹 |
| 222221 in Babylonian numerals |    |
| 222221 in Egyptian numerals | 𓆐𓆐𓂮𓆽𓍣𓎇𓏺 |
Roots and squares for 222221
| Is 222221 a square number? | 222221 is not a square number |
| Is 222221 a cube number? | 222221 is not a cube number |
| Square root of 222221 | 471.40322442682 |
| Cube root of 222221 | 60.570575381276 |
Recreational math for 222221
| Number 222221 reversed | 122222 |
| Sum of the digits | 11 |
| Number of digits | 6 |