113021220020 has 48 divisors (see below), whose sum is σ = 251342880768. Its totient is φ = 42542922240.

The previous prime is 113021220007. The next prime is 113021220119. The reversal of 113021220020 is 20022120311.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 113021219977 and 113021220004.

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, 2764649 + ... + 2805231.

It is an arithmetic number, because the mean of its divisors is an integer number (5236310016).

Almost surely, 2^113021220020 is an apocalyptic number.

113021220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113021220020 is an abundant number, since it is smaller than the sum of its proper divisors (138321660748).

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

113021220020 is a wasteful number, since it uses less digits than its factorization.

113021220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48800 (or 48798 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 113021220020 its reverse (20022120311), we get a palindrome (133043340331).

The spelling of 113021220020 in words is "one hundred thirteen billion, twenty-one million, two hundred twenty thousand, twenty".