113021311220 has 48 divisors (see below), whose sum is σ = 240650811408. Its totient is φ = 44579082240.

The previous prime is 113021311217. The next prime is 113021311243. The reversal of 113021311220 is 22113120311.

It can be written as a sum of positive squares in 8 ways, for example, as 1248774244 + 111772536976 = 35338^2 + 334324^2 .

It is a congruent number.

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, 12225800 + ... + 12235040.

It is an arithmetic number, because the mean of its divisors is an integer number (5013558571).

Almost surely, 2^113021311220 is an apocalyptic number.

113021311220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113021311220 is an abundant number, since it is smaller than the sum of its proper divisors (127629500188).

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

113021311220 is a wasteful number, since it uses less digits than its factorization.

113021311220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17700 (or 17698 counting only the distinct ones).

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

Adding to 113021311220 its reverse (22113120311), we get a palindrome (135134431531).

The spelling of 113021311220 in words is "one hundred thirteen billion, twenty-one million, three hundred eleven thousand, two hundred twenty".