22
Everything about the number 22 — its names, how to write it in other bases and numeral systems, and what makes it interesting mathematically.
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Names of 22
| Nominal | 22 |
| Cardinal | twenty-two |
| Ordinal | 22nd |
| This number as US currency | twenty-two dollars |
Properties (and some facts) of 22
| Is 22 an odd number? | 22 is not an odd number |
| Is 22 an even number? | 22 is an even number |
| Is 22 a palindrome? | 22 is a palindrome |
| Is 22 a triangle number? | 22 is not a triangle number |
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22 in other bases
| Base 2 (Binary) | 10110 |
| Base 3 (Ternary) | 211 |
| Base 4 (Quaternary) | 112 |
| Base 5 (Quinary) | 42 |
| Base 6 (Senary) | 34 |
| Base 8 (Octal) | 26 |
| Base 12 (Duodecimal) | 1A |
| Base 16 (Hexadecimal) | 16 |
| Base 20 (Vigesimal) | 12 |
Primes and factors tests for 22
| Is 22 a prime number? | 22 is not a prime number |
| Is 22 a perfect number? | 22 is not a perfect number |
| Is 22 a Mersenne prime? | 22 is not a Mersenne prime |
| Is 22 a Fermat prime? | 22 is not a Fermat prime |
| Is 22 a Fibonacci prime? | 22 is not a Fibonacci prime |
| Is 22 a partition prime? | 22 is not a partition prime |
| Is 22 a Pell prime? | 22 is not a Pell prime |
| Prime Factors | Prime factors of 22 |
22 in other numeral systems
| 22 in Roman numerals | XXII |
| 22 in Chinese numerals | 貳拾貳 |
| 22 in Babylonian numerals |  |
| 22 in Egyptian numerals | 𓎇𓏻 |
Roots and squares for 22
| Is 22 a square number? | 22 is not a square number |
| Is 22 a cube number? | 22 is not a cube number |
| Square root of 22 | 4.6904157598234 |
| Cube root of 22 | 2.8020393306554 |
Recreational math for 22
| Number 22 reversed | 22 |
| Sum of the digits | 4 |
| Number of digits | 2 |
Arithmetic tables for 22
Other pages about 22
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