12012031231999 has 2 divisors, whose sum is σ = 12012031232000. Its totient is φ = 12012031231998.

The previous prime is 12012031231961. The next prime is 12012031232023. The reversal of 12012031231999 is 99913213021021.

It is a strong prime.

It is an emirp because it is prime and its reverse (99913213021021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12012031231999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12012031231699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006015615999 + 6006015616000.

It is an arithmetic number, because the mean of its divisors is an integer number (6006015616000).

Almost surely, 2^{12012031231999} is an apocalyptic number.

12012031231999 is a deficient number, since it is larger than the sum of its proper divisors (1).

12012031231999 is an equidigital number, since it uses as much as digits as its factorization.

12012031231999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52488, while the sum is 43.

The spelling of 12012031231999 in words is "twelve trillion, twelve billion, thirty-one million, two hundred thirty-one thousand, nine hundred ninety-nine".