12312112099 has 4 divisors (see below), whose sum is σ = 14070985264. Its totient is φ = 10553238936.

The previous prime is 12312112093. The next prime is 12312112103. The reversal of 12312112099 is 99021121321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99021121321 = 5581 ⋅17742541.

It is a cyclic number.

It is not a de Polignac number, because 12312112099 - 2³ = 12312112091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12312112099.

It is not an unprimeable number, because it can be changed into a prime (12312112091) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 879436572 + ... + 879436585.

It is an arithmetic number, because the mean of its divisors is an integer number (3517746316).

Almost surely, 2^12312112099 is an apocalyptic number.

12312112099 is a deficient number, since it is larger than the sum of its proper divisors (1758873165).

12312112099 is an equidigital number, since it uses as much as digits as its factorization.

12312112099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758873164.

The product of its (nonzero) digits is 1944, while the sum is 31.

The spelling of 12312112099 in words is "twelve billion, three hundred twelve million, one hundred twelve thousand, ninety-nine".