113121230100 has 72 divisors (see below), whose sum is σ = 327455916480. Its totient is φ = 30151054080.

The previous prime is 113121230087. The next prime is 113121230137. The reversal of 113121230100 is 1032121311.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 113121230100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 536449 + ... + 716951.

It is an arithmetic number, because the mean of its divisors is an integer number (4547998840).

Almost surely, 2^113121230100 is an apocalyptic number.

113121230100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113121230100 is an abundant number, since it is smaller than the sum of its proper divisors (214334686380).

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

113121230100 is a wasteful number, since it uses less digits than its factorization.

113121230100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182609 (or 182602 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 113121230100 its reverse (1032121311), we get a palindrome (114153351411).

The spelling of 113121230100 in words is "one hundred thirteen billion, one hundred twenty-one million, two hundred thirty thousand, one hundred".