113211211020 has 48 divisors (see below), whose sum is σ = 325558732128. Its totient is φ = 29373719040.

The previous prime is 113211210977. The next prime is 113211211021. The reversal of 113211211020 is 20112112311.

It is a super-2 number, since 2×113211211020² (a number of 23 digits) contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (113211211021) 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, 25495801 + ... + 25500240.

It is an arithmetic number, because the mean of its divisors is an integer number (6782473586).

Almost surely, 2^113211211020 is an apocalyptic number.

113211211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113211211020 is an abundant number, since it is smaller than the sum of its proper divisors (212347521108).

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

113211211020 is a wasteful number, since it uses less digits than its factorization.

113211211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50996090 (or 50996088 counting only the distinct ones).

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

Adding to 113211211020 its reverse (20112112311), we get a palindrome (133323323331).

The spelling of 113211211020 in words is "one hundred thirteen billion, two hundred eleven million, two hundred eleven thousand, twenty".