111220222120 has 64 divisors (see below), whose sum is σ = 286503246720. Its totient is φ = 38064862464.

The previous prime is 111220222103. The next prime is 111220222147. The reversal of 111220222120 is 21222022111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 111220222094 and 111220222103.

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, 195127 + ... + 510406.

It is an arithmetic number, because the mean of its divisors is an integer number (4476613230).

Almost surely, 2^111220222120 is an apocalyptic number.

111220222120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111220222120 is an abundant number, since it is smaller than the sum of its proper divisors (175283024600).

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

111220222120 is a wasteful number, since it uses less digits than its factorization.

111220222120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706114 (or 706110 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 111220222120 its reverse (21222022111), we get a palindrome (132442244231).

Subtracting from 111220222120 its reverse (21222022111), we obtain a square (89998200009 = 299997²).

The spelling of 111220222120 in words is "one hundred eleven billion, two hundred twenty million, two hundred twenty-two thousand, one hundred twenty".