113020021200 has 120 divisors (see below), whose sum is σ = 362256376608. Its totient is φ = 30120727040.

The previous prime is 113020021199. The next prime is 113020021207. The reversal of 113020021200 is 2120020311.

113020021200 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (120).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113020021207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2052427 + ... + 2106773.

Almost surely, 2^113020021200 is an apocalyptic number.

113020021200 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 113020021200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181128188304).

113020021200 is an abundant number, since it is smaller than the sum of its proper divisors (249236355408).

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

113020021200 is a wasteful number, since it uses less digits than its factorization.

113020021200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56101 (or 56090 counting only the distinct ones).

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

Adding to 113020021200 its reverse (2120020311), we get a palindrome (115140041511).

The spelling of 113020021200 in words is "one hundred thirteen billion, twenty million, twenty-one thousand, two hundred".