113120100 has 216 divisors, whose sum is σ = 377336960. Its totient is φ = 28304640.

The previous prime is 113120099. The next prime is 113120123. The reversal of 113120100 is 1021311.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1431861 + ... + 1431939.

Almost surely, 2^113120100 is an apocalyptic number.

113120100 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 113120100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188668480).

113120100 is an abundant number, since it is smaller than the sum of its proper divisors (264216860).

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

113120100 is a wasteful number, since it uses less digits than its factorization.

113120100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 6, while the sum is 9.

The square root of 113120100 is about 10635.7933413545. The cubic root of 113120100 is about 483.6300305430.

Adding to 113120100 its reverse (1021311), we get a palindrome (114141411).

The spelling of 113120100 in words is "one hundred thirteen million, one hundred twenty thousand, one hundred".