113221111020 has 24 divisors (see below), whose sum is σ = 317019111024. Its totient is φ = 30192296256.

The previous prime is 113221110991. The next prime is 113221111039. The reversal of 113221111020 is 20111122311.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 943509199 + ... + 943509318.

It is an arithmetic number, because the mean of its divisors is an integer number (13209129626).

Almost surely, 2^113221111020 is an apocalyptic number.

113221111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113221111020 is an abundant number, since it is smaller than the sum of its proper divisors (203798000004).

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

113221111020 is a wasteful number, since it uses less digits than its factorization.

113221111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1887018529 (or 1887018527 counting only the distinct ones).

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

Adding to 113221111020 its reverse (20111122311), we get a palindrome (133332233331).

The spelling of 113221111020 in words is "one hundred thirteen billion, two hundred twenty-one million, one hundred eleven thousand, twenty".