12001213391 has 2 divisors, whose sum is σ = 12001213392. Its totient is φ = 12001213390.

The previous prime is 12001213387. The next prime is 12001213453. The reversal of 12001213391 is 19331210021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12001213391 - 2² = 12001213387 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12001213381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6000606695 + 6000606696.

It is an arithmetic number, because the mean of its divisors is an integer number (6000606696).

Almost surely, 2^12001213391 is an apocalyptic number.

12001213391 is a deficient number, since it is larger than the sum of its proper divisors (1).

12001213391 is an equidigital number, since it uses as much as digits as its factorization.

12001213391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 23.

The spelling of 12001213391 in words is "twelve billion, one million, two hundred thirteen thousand, three hundred ninety-one".