12099999912 has 128 divisors (see below), whose sum is σ = 40615464960. Its totient is φ = 2901093120.

The previous prime is 12099999911. The next prime is 12099999913. The reversal of 12099999912 is 21999999021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (12099999911) and next prime (12099999913).

It is not an unprimeable number, because it can be changed into a prime (12099999911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 227808 + ... + 275855.

It is an arithmetic number, because the mean of its divisors is an integer number (317308320).

Almost surely, 2^12099999912 is an apocalyptic number.

12099999912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12099999912 is an abundant number, since it is smaller than the sum of its proper divisors (28515465048).

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

12099999912 is a wasteful number, since it uses less digits than its factorization.

12099999912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 503703 (or 503699 counting only the distinct ones).

The product of its (nonzero) digits is 2125764, while the sum is 60.

The spelling of 12099999912 in words is "twelve billion, ninety-nine million, nine hundred ninety-nine thousand, nine hundred twelve".