12402312191 has 2 divisors, whose sum is σ = 12402312192. Its totient is φ = 12402312190.

The previous prime is 12402312161. The next prime is 12402312211. The reversal of 12402312191 is 19121320421.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12402312191 - 2²² = 12398117887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12402312191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12402312161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6201156095 + 6201156096.

It is an arithmetic number, because the mean of its divisors is an integer number (6201156096).

Almost surely, 2^12402312191 is an apocalyptic number.

12402312191 is a deficient number, since it is larger than the sum of its proper divisors (1).

12402312191 is an equidigital number, since it uses as much as digits as its factorization.

12402312191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The spelling of 12402312191 in words is "twelve billion, four hundred two million, three hundred twelve thousand, one hundred ninety-one".