111100120110 has 144 divisors (see below), whose sum is σ = 338278356000. Its totient is φ = 25223732352.

The previous prime is 111100120099. The next prime is 111100120123. The reversal of 111100120110 is 11021001111.

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

It is a junction number, because it is equal to n+sod(n) for n = 111100120092 and 111100120101.

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 71 ways as a sum of consecutive naturals, for example, 572551 + ... + 741629.

It is an arithmetic number, because the mean of its divisors is an integer number (2349155250).

Almost surely, 2^111100120110 is an apocalyptic number.

111100120110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 111100120110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (169139178000).

111100120110 is an abundant number, since it is smaller than the sum of its proper divisors (227178235890).

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

111100120110 is a wasteful number, since it uses less digits than its factorization.

111100120110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169255 (or 169245 counting only the distinct ones).

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

Adding to 111100120110 its reverse (11021001111), we get a palindrome (122121121221).

The spelling of 111100120110 in words is "one hundred eleven billion, one hundred million, one hundred twenty thousand, one hundred ten".