111220022120 has 32 divisors (see below), whose sum is σ = 252674622720. Its totient is φ = 44056084800.

The previous prime is 111220022117. The next prime is 111220022143. The reversal of 111220022120 is 21220022111.

It is a junction number, because it is equal to n+sod(n) for n = 111220022095 and 111220022104.

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, 13493456 + ... + 13501695.

It is an arithmetic number, because the mean of its divisors is an integer number (7896081960).

Almost surely, 2^111220022120 is an apocalyptic number.

111220022120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111220022120 is an abundant number, since it is smaller than the sum of its proper divisors (141454600600).

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

111220022120 is a wasteful number, since it uses less digits than its factorization.

111220022120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26995265 (or 26995261 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 111220022120 its reverse (21220022111), we get a palindrome (132440044231).

Subtracting from 111220022120 its reverse (21220022111), we obtain a palindrome (90000000009).

The spelling of 111220022120 in words is "one hundred eleven billion, two hundred twenty million, twenty-two thousand, one hundred twenty".