113101211220 has 24 divisors (see below), whose sum is σ = 316683391584. Its totient is φ = 30160322976.

The previous prime is 113101211183. The next prime is 113101211221. The reversal of 113101211220 is 22112101311.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 113101211220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113101211221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 942510034 + ... + 942510153.

It is an arithmetic number, because the mean of its divisors is an integer number (13195141316).

Almost surely, 2^113101211220 is an apocalyptic number.

113101211220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113101211220 is an abundant number, since it is smaller than the sum of its proper divisors (203582180364).

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

113101211220 is a wasteful number, since it uses less digits than its factorization.

113101211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1885020199 (or 1885020197 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 113101211220 its reverse (22112101311), we get a palindrome (135213312531).

The spelling of 113101211220 in words is "one hundred thirteen billion, one hundred one million, two hundred eleven thousand, two hundred twenty".