111101230120 has 64 divisors (see below), whose sum is σ = 255377940480. Its totient is φ = 43481066496.

The previous prime is 111101230099. The next prime is 111101230159. The reversal of 111101230120 is 21032101111.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 111101230120.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7450512 + ... + 7465408.

It is an arithmetic number, because the mean of its divisors is an integer number (3990280320).

Almost surely, 2^111101230120 is an apocalyptic number.

111101230120 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 111101230120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127688970240).

111101230120 is an abundant number, since it is smaller than the sum of its proper divisors (144276710360).

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

111101230120 is a wasteful number, since it uses less digits than its factorization.

111101230120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18922 (or 18918 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 111101230120 its reverse (21032101111), we get a palindrome (132133331231).

The spelling of 111101230120 in words is "one hundred eleven billion, one hundred one million, two hundred thirty thousand, one hundred twenty".