113221232320 has 56 divisors (see below), whose sum is σ = 308123502624. Its totient is φ = 38818707456.

The previous prime is 113221232309. The next prime is 113221232321. The reversal of 113221232320 is 23232122311.

It is a tau number, because it is divible by the number of its divisors (56).

It is a junction number, because it is equal to n+sod(n) for n = 113221232291 and 113221232300.

It is not an unprimeable number, because it can be changed into a prime (113221232321) 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, 25270357 + ... + 25274836.

It is an arithmetic number, because the mean of its divisors is an integer number (5502205404).

Almost surely, 2^113221232320 is an apocalyptic number.

113221232320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113221232320 is an abundant number, since it is smaller than the sum of its proper divisors (194902270304).

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

113221232320 is an equidigital number, since it uses as much as digits as its factorization.

113221232320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50545217 (or 50545207 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 113221232320 its reverse (23232122311), we get a palindrome (136453354631).

The spelling of 113221232320 in words is "one hundred thirteen billion, two hundred twenty-one million, two hundred thirty-two thousand, three hundred twenty".