22165235 has 4 divisors (see below), whose sum is σ = 26598288. Its totient is φ = 17732184.

The previous prime is 22165211. The next prime is 22165237. The reversal of 22165235 is 53256122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22165235 - 2²⁰ = 21116659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22165237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2216519 + ... + 2216528.

It is an arithmetic number, because the mean of its divisors is an integer number (6649572).

Almost surely, 2^22165235 is an apocalyptic number.

22165235 is a deficient number, since it is larger than the sum of its proper divisors (4433053).

22165235 is an equidigital number, since it uses as much as digits as its factorization.

22165235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4433052.

The product of its digits is 3600, while the sum is 26.

The square root of 22165235 is about 4707.9969201349. The cubic root of 22165235 is about 280.9036916191.

It can be divided in two parts, 221 and 65235, that added together give a palindrome (65456).

The spelling of 22165235 in words is "twenty-two million, one hundred sixty-five thousand, two hundred thirty-five".