113110231220 has 96 divisors (see below), whose sum is σ = 283469856768. Its totient is φ = 37068020352.

The previous prime is 113110231211. The next prime is 113110231261. The reversal of 113110231220 is 22132011311.

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, 4776329 + ... + 4799951.

It is an arithmetic number, because the mean of its divisors is an integer number (2952811008).

Almost surely, 2^113110231220 is an apocalyptic number.

113110231220 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 113110231220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141734928384).

113110231220 is an abundant number, since it is smaller than the sum of its proper divisors (170359625548).

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

113110231220 is a wasteful number, since it uses less digits than its factorization.

113110231220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25149 (or 25147 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 113110231220 its reverse (22132011311), we get a palindrome (135242242531).

The spelling of 113110231220 in words is "one hundred thirteen billion, one hundred ten million, two hundred thirty-one thousand, two hundred twenty".