12199009900 has 144 divisors (see below), whose sum is σ = 33217373952. Its totient is φ = 3777696000.

The previous prime is 12199009891. The next prime is 12199009931. The reversal of 12199009900 is 990099121.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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, 1203855 + ... + 1213945.

It is an arithmetic number, because the mean of its divisors is an integer number (230676208).

Almost surely, 2^12199009900 is an apocalyptic number.

12199009900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12199009900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16608686976).

12199009900 is an abundant number, since it is smaller than the sum of its proper divisors (21018364052).

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

12199009900 is a wasteful number, since it uses less digits than its factorization.

12199009900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10280 (or 10273 counting only the distinct ones).

The product of its (nonzero) digits is 13122, while the sum is 40.

The spelling of 12199009900 in words is "twelve billion, one hundred ninety-nine million, nine thousand, nine hundred".