12100191100 has 36 divisors (see below), whose sum is σ = 26262475344. Its totient is φ = 4839143680.

The previous prime is 12100191079. The next prime is 12100191109. The reversal of 12100191100 is 119100121.

12100191100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12100191109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 771537 + ... + 787063.

It is an arithmetic number, because the mean of its divisors is an integer number (729513204).

Almost surely, 2^12100191100 is an apocalyptic number.

12100191100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12100191100 is an abundant number, since it is smaller than the sum of its proper divisors (14162284244).

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

12100191100 is a wasteful number, since it uses less digits than its factorization.

12100191100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23334 (or 23327 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 16.

Adding to 12100191100 its reverse (119100121), we get a palindrome (12219291221).

The spelling of 12100191100 in words is "twelve billion, one hundred million, one hundred ninety-one thousand, one hundred".