22213155 has 16 divisors (see below), whose sum is σ = 36368640. Its totient is φ = 11571168.

The previous prime is 22213133. The next prime is 22213183. The reversal of 22213155 is 55131222.

It is not a de Polignac number, because 22213155 - 2⁶ = 22213091 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16575 + ... + 17864.

It is an arithmetic number, because the mean of its divisors is an integer number (2273040).

Almost surely, 2^22213155 is an apocalyptic number.

22213155 is a deficient number, since it is larger than the sum of its proper divisors (14155485).

22213155 is a wasteful number, since it uses less digits than its factorization.

22213155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34490.

The product of its digits is 600, while the sum is 21.

The square root of 22213155 is about 4713.0833856404. The cubic root of 22213155 is about 281.1059786084.

Adding to 22213155 its reverse (55131222), we get a palindrome (77344377).

The spelling of 22213155 in words is "twenty-two million, two hundred thirteen thousand, one hundred fifty-five".