22112212112220 has 96 divisors (see below), whose sum is σ = 62228288908800. Its totient is φ = 5866678920960.

The previous prime is 22112212112203. The next prime is 22112212112227. The reversal of 22112212112220 is 2221121221122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112212112227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 408452274 + ... + 408506406.

It is an arithmetic number, because the mean of its divisors is an integer number (648211342800).

Almost surely, 2^{22112212112220} is an apocalyptic number.

22112212112220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22112212112220 is an abundant number, since it is smaller than the sum of its proper divisors (40116076796580).

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

22112212112220 is a wasteful number, since it uses less digits than its factorization.

22112212112220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88555 (or 88553 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 22112212112220 its reverse (2221121221122), we get a palindrome (24333333333342).

The spelling of 22112212112220 in words is "twenty-two trillion, one hundred twelve billion, two hundred twelve million, one hundred twelve thousand, two hundred twenty".