22213165 has 16 divisors (see below), whose sum is σ = 28804608. Its totient is φ = 16347456.

The previous prime is 22213133. The next prime is 22213183. The reversal of 22213165 is 56131222.

It is a cyclic number.

It is not a de Polignac number, because 22213165 - 2⁵ = 22213133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36292 + ... + 36898.

It is an arithmetic number, because the mean of its divisors is an integer number (1800288).

Almost surely, 2^22213165 is an apocalyptic number.

It is an amenable number.

22213165 is a deficient number, since it is larger than the sum of its proper divisors (6591443).

22213165 is a wasteful number, since it uses less digits than its factorization.

22213165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1188.

The product of its digits is 720, while the sum is 22.

The square root of 22213165 is about 4713.0844465170. The cubic root of 22213165 is about 281.1060207915.

Adding to 22213165 its reverse (56131222), we get a palindrome (78344387).

The spelling of 22213165 in words is "twenty-two million, two hundred thirteen thousand, one hundred sixty-five".