222222122112 has 128 divisors (see below), whose sum is σ = 645161587200. Its totient is φ = 67467755520.

The previous prime is 222222122071. The next prime is 222222122159. The reversal of 222222122112 is 211221222222.

It is a tau number, because it is divible by the number of its divisors (128).

It is a nude number because it is divisible by every one of its digits.

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, 346687 + ... + 751422.

It is an arithmetic number, because the mean of its divisors is an integer number (5040324900).

Almost surely, 2^222222122112 is an apocalyptic number.

It is an amenable number.

222222122112 is an abundant number, since it is smaller than the sum of its proper divisors (422939465088).

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

222222122112 is a wasteful number, since it uses less digits than its factorization.

222222122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098174 (or 1098162 counting only the distinct ones).

The product of its digits is 512, while the sum is 21.

Adding to 222222122112 its reverse (211221222222), we get a palindrome (433443344334).

The spelling of 222222122112 in words is "two hundred twenty-two billion, two hundred twenty-two million, one hundred twenty-two thousand, one hundred twelve".