113321121100 has 72 divisors (see below), whose sum is σ = 284042163888. Its totient is φ = 38783692800.

The previous prime is 113321121061. The next prime is 113321121107. The reversal of 113321121100 is 1121123311.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (113321121107) 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, 3011277 + ... + 3048676.

It is an arithmetic number, because the mean of its divisors is an integer number (3945030054).

Almost surely, 2^113321121100 is an apocalyptic number.

113321121100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

113321121100 is an abundant number, since it is smaller than the sum of its proper divisors (170721042788).

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

113321121100 is a wasteful number, since it uses less digits than its factorization.

113321121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6059995 (or 6059988 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 113321121100 its reverse (1121123311), we get a palindrome (114442244411).

The spelling of 113321121100 in words is "one hundred thirteen billion, three hundred twenty-one million, one hundred twenty-one thousand, one hundred".