113122020 has 96 divisors (see below), whose sum is σ = 349163136. Its totient is φ = 27136000.

The previous prime is 113122019. The next prime is 113122081. The reversal of 113122020 is 20221311.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 113121987 and 113122005.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65812 + ... + 67508.

It is an arithmetic number, because the mean of its divisors is an integer number (3637116).

Almost surely, 2^113122020 is an apocalyptic number.

113122020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 113122020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174581568).

113122020 is an abundant number, since it is smaller than the sum of its proper divisors (236041116).

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

113122020 is a wasteful number, since it uses less digits than its factorization.

113122020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1821 (or 1819 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 113122020 is about 10635.8836022213. The cubic root of 113122020 is about 483.6327667629.

Adding to 113122020 its reverse (20221311), we get a palindrome (133343331).

The spelling of 113122020 in words is "one hundred thirteen million, one hundred twenty-two thousand, twenty".