222222123120 has 80 divisors (see below), whose sum is σ = 718840276992. Its totient is φ = 56682743040.

The previous prime is 222222123089. The next prime is 222222123127. The reversal of 222222123120 is 21321222222.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222222123127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20123296 + ... + 20134335.

Almost surely, 2^222222123120 is an apocalyptic number.

222222123120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222222123120 is an abundant number, since it is smaller than the sum of its proper divisors (496618153872).

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

222222123120 is a wasteful number, since it uses less digits than its factorization.

222222123120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40257670 (or 40257664 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 222222123120 its reverse (21321222222), we get a palindrome (243543345342).

The spelling of 222222123120 in words is "two hundred twenty-two billion, two hundred twenty-two million, one hundred twenty-three thousand, one hundred twenty".