12312120099 has 16 divisors (see below), whose sum is σ = 17342574080. Its totient is φ = 7747993440.

The previous prime is 12312120089. The next prime is 12312120113. The reversal of 12312120099 is 99002121321.

It is not a de Polignac number, because 12312120099 - 2¹⁵ = 12312087331 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12312120089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 374107 + ... + 405684.

It is an arithmetic number, because the mean of its divisors is an integer number (1083910880).

Almost surely, 2^12312120099 is an apocalyptic number.

12312120099 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12312120099 is a deficient number, since it is larger than the sum of its proper divisors (5030453981).

12312120099 is a wasteful number, since it uses less digits than its factorization.

12312120099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780090.

The product of its (nonzero) digits is 1944, while the sum is 30.

The spelling of 12312120099 in words is "twelve billion, three hundred twelve million, one hundred twenty thousand, ninety-nine".