12100157100 has 54 divisors (see below), whose sum is σ = 37927273020. Its totient is φ = 3226708320.

The previous prime is 12100157089. The next prime is 12100157123. The reversal of 12100157100 is 175100121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 17 ways as a sum of consecutive naturals, for example, 6721410 + ... + 6723209.

Almost surely, 2^12100157100 is an apocalyptic number.

12100157100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12100157100 is an abundant number, since it is smaller than the sum of its proper divisors (25827115920).

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

12100157100 is a wasteful number, since it uses less digits than its factorization.

12100157100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13444639 (or 13444629 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 18.

Adding to 12100157100 its reverse (175100121), we get a palindrome (12275257221).

The spelling of 12100157100 in words is "twelve billion, one hundred million, one hundred fifty-seven thousand, one hundred".