12331001999 has 2 divisors, whose sum is σ = 12331002000. Its totient is φ = 12331001998.

The previous prime is 12331001993. The next prime is 12331002041. The reversal of 12331001999 is 99910013321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12331001999 - 2¹⁶ = 12330936463 is a prime.

It is a super-2 number, since 2×12331001999² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12331001993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6165500999 + 6165501000.

It is an arithmetic number, because the mean of its divisors is an integer number (6165501000).

Almost surely, 2^12331001999 is an apocalyptic number.

12331001999 is a deficient number, since it is larger than the sum of its proper divisors (1).

12331001999 is an equidigital number, since it uses as much as digits as its factorization.

12331001999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13122, while the sum is 38.

The spelling of 12331001999 in words is "twelve billion, three hundred thirty-one million, one thousand, nine hundred ninety-nine".