113443121000 has 64 divisors (see below), whose sum is σ = 289589376960. Its totient is φ = 41252040000.

The previous prime is 113443120991. The next prime is 113443121041. The reversal of 113443121000 is 121344311.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 5145506 + ... + 5167505.

It is an arithmetic number, because the mean of its divisors is an integer number (4524834015).

Almost surely, 2^113443121000 is an apocalyptic number.

113443121000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113443121000 is an abundant number, since it is smaller than the sum of its proper divisors (176146255960).

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

113443121000 is a wasteful number, since it uses less digits than its factorization.

113443121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10313043 (or 10313029 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 113443121000 its reverse (121344311), we get a palindrome (113564465311).

Subtracting from 113443121000 its reverse (121344311), we obtain a square (113321776689 = 336633²).

It can be divided in two parts, 1134 and 43121000, that added together give a palindrome (43122134).

The spelling of 113443121000 in words is "one hundred thirteen billion, four hundred forty-three million, one hundred twenty-one thousand".