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The number 22 is an integer that comes after 21 and before 23. It is an even number and can be expressed as a sum of two primes (e.g., 11 + 11). In mathematics, 22 has several interesting properties: - **In Roman Numerals:** 22 is written as XXII. - **In Binary:** 22 is represented as 10110.

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  1. Integers
  2. Numbers
  3. Arithmetic
  4. Fields of mathematics
  5. Mathematics
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