22502131 has 2 divisors, whose sum is σ = 22502132. Its totient is φ = 22502130.

The previous prime is 22502111. The next prime is 22502141. The reversal of 22502131 is 13120522.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22502131 - 2⁷ = 22502003 is a prime.

It is a super-2 number, since 2×22502131² = 1012691799082322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (22502111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11251065 + 11251066.

It is an arithmetic number, because the mean of its divisors is an integer number (11251066).

Almost surely, 2^22502131 is an apocalyptic number.

22502131 is a deficient number, since it is larger than the sum of its proper divisors (1).

22502131 is an equidigital number, since it uses as much as digits as its factorization.

22502131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 22502131 is about 4743.6411120573. The cubic root of 22502131 is about 282.3197210397.

Adding to 22502131 its reverse (13120522), we get a palindrome (35622653).

The spelling of 22502131 in words is "twenty-two million, five hundred two thousand, one hundred thirty-one".