222202172172 has 24 divisors (see below), whose sum is σ = 536350071600. Its totient is φ = 71513342656.

The previous prime is 222202172123. The next prime is 222202172183. The reversal of 222202172172 is 271271202222.

222202172172 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319255647 + ... + 319256342.

It is an arithmetic number, because the mean of its divisors is an integer number (22347919650).

Almost surely, 2^222202172172 is an apocalyptic number.

It is an amenable number.

222202172172 is an abundant number, since it is smaller than the sum of its proper divisors (314147899428).

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

222202172172 is a wasteful number, since it uses less digits than its factorization.

222202172172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638512025 (or 638512023 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 30.

Adding to 222202172172 its reverse (271271202222), we get a palindrome (493473374394).

The spelling of 222202172172 in words is "two hundred twenty-two billion, two hundred two million, one hundred seventy-two thousand, one hundred seventy-two".