12012002591 has 2 divisors, whose sum is σ = 12012002592. Its totient is φ = 12012002590.

The previous prime is 12012002567. The next prime is 12012002617. The reversal of 12012002591 is 19520021021.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12012002591 is a prime.

It is a super-3 number, since 3×12012002591³ (a number of 31 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12012002501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6006001295 + 6006001296.

It is an arithmetic number, because the mean of its divisors is an integer number (6006001296).

Almost surely, 2^12012002591 is an apocalyptic number.

12012002591 is a deficient number, since it is larger than the sum of its proper divisors (1).

12012002591 is an equidigital number, since it uses as much as digits as its factorization.

12012002591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 23.

The spelling of 12012002591 in words is "twelve billion, twelve million, two thousand, five hundred ninety-one".