12512191 has 2 divisors, whose sum is σ = 12512192. Its totient is φ = 12512190.

The previous prime is 12512173. The next prime is 12512231. The reversal of 12512191 is 19121521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12512191 - 2⁷ = 12512063 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12512111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6256095 + 6256096.

It is an arithmetic number, because the mean of its divisors is an integer number (6256096).

Almost surely, 2^12512191 is an apocalyptic number.

12512191 is a deficient number, since it is larger than the sum of its proper divisors (1).

12512191 is an equidigital number, since it uses as much as digits as its factorization.

12512191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 180, while the sum is 22.

The square root of 12512191 is about 3537.2575535293. The cubic root of 12512191 is about 232.1548646457.

The spelling of 12512191 in words is "twelve million, five hundred twelve thousand, one hundred ninety-one".