22222212100000 has 144 divisors (see below), whose sum is σ = 59655248507232. Its totient is φ = 8080804000000.

The previous prime is 22222212099979. The next prime is 22222212100031. The reversal of 22222212100000 is 121222222.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9001006 + ... + 11201005.

It is an arithmetic number, because the mean of its divisors is an integer number (414272559078).

Almost surely, 2^{22222212100000} is an apocalyptic number.

22222212100000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22222212100000 is an abundant number, since it is smaller than the sum of its proper divisors (37433036407232).

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

22222212100000 is an equidigital number, since it uses as much as digits as its factorization.

22222212100000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20202057 (or 20202029 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22222212100000 its reverse (121222222), we get a palindrome (22222333322222).

The spelling of 22222212100000 in words is "twenty-two trillion, two hundred twenty-two billion, two hundred twelve million, one hundred thousand".