12109708900 has 54 divisors (see below), whose sum is σ = 27733999650. Its totient is φ = 4588928640.

The previous prime is 12109708883. The next prime is 12109708903. The reversal of 12109708900 is 980790121.

It can be written as a sum of positive squares in 3 ways, for example, as 232196644 + 11877512256 = 15238^2 + 108984^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12109708900.

It is not an unprimeable number, because it can be changed into a prime (12109708903) by changing a digit.

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, 131625 + ... + 203824.

Almost surely, 2^12109708900 is an apocalyptic number.

12109708900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12109708900 is an abundant number, since it is smaller than the sum of its proper divisors (15624290750).

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

12109708900 is a wasteful number, since it uses less digits than its factorization.

12109708900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335501 (or 335475 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 37.

The spelling of 12109708900 in words is "twelve billion, one hundred nine million, seven hundred eight thousand, nine hundred".