111100110120 has 384 divisors, whose sum is σ = 389660544000. Its totient is φ = 27389214720.

The previous prime is 111100110109. The next prime is 111100110139. The reversal of 111100110120 is 21011001111.

It is a super-2 number, since 2×111100110120² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 31391311 + ... + 31394849.

It is an arithmetic number, because the mean of its divisors is an integer number (1014741000).

Almost surely, 2^111100110120 is an apocalyptic number.

111100110120 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 111100110120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (194830272000).

111100110120 is an abundant number, since it is smaller than the sum of its proper divisors (278560433880).

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

111100110120 is a wasteful number, since it uses less digits than its factorization.

111100110120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3713 (or 3706 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 111100110120 its reverse (21011001111), we get a palindrome (132111111231).

The spelling of 111100110120 in words is "one hundred eleven billion, one hundred million, one hundred ten thousand, one hundred twenty".