12311033321999 has 4 divisors (see below), whose sum is σ = 12313453424064. Its totient is φ = 12308613219936.

The previous prime is 12311033321957. The next prime is 12311033322023. The reversal of 12311033321999 is 99912333011321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12311033321999 - 2⁴⁰ = 11211521694223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12311033321299) 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, 1210043402 + ... + 1210053575.

It is an arithmetic number, because the mean of its divisors is an integer number (3078363356016).

Almost surely, 2^{12311033321999} is an apocalyptic number.

12311033321999 is a deficient number, since it is larger than the sum of its proper divisors (2420102065).

12311033321999 is an equidigital number, since it uses as much as digits as its factorization.

12311033321999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2420102064.

The product of its (nonzero) digits is 236196, while the sum is 47.

The spelling of 12311033321999 in words is "twelve trillion, three hundred eleven billion, thirty-three million, three hundred twenty-one thousand, nine hundred ninety-nine".