222111122120 has 16 divisors (see below), whose sum is σ = 499750024860. Its totient is φ = 88844448832.

The previous prime is 222111122113. The next prime is 222111122141. The reversal of 222111122120 is 21221111222.

It can be written as a sum of positive squares in 2 ways, for example, as 216714456676 + 5396665444 = 465526^2 + 73462^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2776388987 + ... + 2776389066.

Almost surely, 2^222111122120 is an apocalyptic number.

222111122120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222111122120 is an abundant number, since it is smaller than the sum of its proper divisors (277638902740).

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

222111122120 is a wasteful number, since it uses less digits than its factorization.

222111122120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5552778064 (or 5552778060 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 222111122120 its reverse (21221111222), we get a palindrome (243332233342).

The spelling of 222111122120 in words is "two hundred twenty-two billion, one hundred eleven million, one hundred twenty-two thousand, one hundred twenty".