11112222120 has 32 divisors (see below), whose sum is σ = 33336666720. Its totient is φ = 2963259200.

The previous prime is 11112222119. The next prime is 11112222151. The reversal of 11112222120 is 2122221111.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11112222120.

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, 46300806 + ... + 46301045.

It is an arithmetic number, because the mean of its divisors is an integer number (1041770835).

Almost surely, 2^11112222120 is an apocalyptic number.

11112222120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11112222120 is an abundant number, since it is smaller than the sum of its proper divisors (22224444600).

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

11112222120 is a wasteful number, since it uses less digits than its factorization.

11112222120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92601865 (or 92601861 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 11112222120 its reverse (2122221111), we get a palindrome (13234443231).

The spelling of 11112222120 in words is "eleven billion, one hundred twelve million, two hundred twenty-two thousand, one hundred twenty".