12113012100 has 144 divisors (see below), whose sum is σ = 41795324928. Its totient is φ = 2648300160.

The previous prime is 12113012099. The next prime is 12113012207. The reversal of 12113012100 is 121031121.

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

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 47 ways as a sum of consecutive naturals, for example, 77094 + ... + 173693.

It is an arithmetic number, because the mean of its divisors is an integer number (290245312).

Almost surely, 2^12113012100 is an apocalyptic number.

12113012100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12113012100 is an abundant number, since it is smaller than the sum of its proper divisors (29682312828).

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

12113012100 is a wasteful number, since it uses less digits than its factorization.

12113012100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250834 (or 250827 counting only the distinct ones).

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

Adding to 12113012100 its reverse (121031121), we get a palindrome (12234043221).

The spelling of 12113012100 in words is "twelve billion, one hundred thirteen million, twelve thousand, one hundred".