113220313220 has 48 divisors (see below), whose sum is σ = 278048039808. Its totient is φ = 37915637760.

The previous prime is 113220313189. The next prime is 113220313223. The reversal of 113220313220 is 22313022311.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 113220313192 and 113220313201.

It is not an unprimeable number, because it can be changed into a prime (113220313223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9397661 + ... + 9409700.

It is an arithmetic number, because the mean of its divisors is an integer number (5792667496).

Almost surely, 2^113220313220 is an apocalyptic number.

113220313220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113220313220 is an abundant number, since it is smaller than the sum of its proper divisors (164827726588).

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

113220313220 is a wasteful number, since it uses less digits than its factorization.

113220313220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18807420 (or 18807418 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 113220313220 its reverse (22313022311), we get a palindrome (135533335531).

The spelling of 113220313220 in words is "one hundred thirteen billion, two hundred twenty million, three hundred thirteen thousand, two hundred twenty".