111220000120 has 32 divisors (see below), whose sum is σ = 252722682720. Its totient is φ = 44047523200.

The previous prime is 111220000103. The next prime is 111220000169. The reversal of 111220000120 is 21000022111.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 111220000097 and 111220000106.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13760812 + ... + 13768891.

It is an arithmetic number, because the mean of its divisors is an integer number (7897583835).

Almost surely, 2^111220000120 is an apocalyptic number.

111220000120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

111220000120 is an abundant number, since it is smaller than the sum of its proper divisors (141502682600).

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

111220000120 is a wasteful number, since it uses less digits than its factorization.

111220000120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27529815 (or 27529811 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 111220000120 its reverse (21000022111), we get a palindrome (132220022231).

The spelling of 111220000120 in words is "one hundred eleven billion, two hundred twenty million, one hundred twenty", and thus it is an aban number.