111200020020120 has 128 divisors (see below), whose sum is σ = 335644681487040. Its totient is φ = 29471884247040.

The previous prime is 111200020020109. The next prime is 111200020020137. The reversal of 111200020020120 is 21020020002111.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 111200020020096 and 111200020020105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22310092 + ... + 26835428.

Almost surely, 2^{111200020020120} is an apocalyptic number.

111200020020120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111200020020120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167822340743520).

111200020020120 is an abundant number, since it is smaller than the sum of its proper divisors (224444661466920).

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

111200020020120 is a wasteful number, since it uses less digits than its factorization.

111200020020120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4526605 (or 4526601 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 111200020020120 its reverse (21020020002111), we get a palindrome (132220040022231).

The spelling of 111200020020120 in words is "one hundred eleven trillion, two hundred billion, twenty million, twenty thousand, one hundred twenty".