22118118 has 16 divisors (see below), whose sum is σ = 48257856. Its totient is φ = 6702440.

The previous prime is 22118113. The next prime is 22118123. The reversal of 22118118 is 81181122.

It is an interprime number because it is at equal distance from previous prime (22118113) and next prime (22118123).

It is a super-2 number, since 2×22118118² = 978422287723848, which contains 22 as substring.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22118113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167496 + ... + 167627.

It is an arithmetic number, because the mean of its divisors is an integer number (3016116).

Almost surely, 2^22118118 is an apocalyptic number.

22118118 is an abundant number, since it is smaller than the sum of its proper divisors (26139738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22118118 is a wasteful number, since it uses less digits than its factorization.

22118118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335139.

The product of its digits is 256, while the sum is 24.

The square root of 22118118 is about 4702.9903253143. The cubic root of 22118118 is about 280.7045099047.

The spelling of 22118118 in words is "twenty-two million, one hundred eighteen thousand, one hundred eighteen".