12215104591 has 2 divisors, whose sum is σ = 12215104592. Its totient is φ = 12215104590.

The previous prime is 12215104543. The next prime is 12215104633. The reversal of 12215104591 is 19540151221.

12215104591 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12215104591 - 2⁷ = 12215104463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12215104991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6107552295 + 6107552296.

It is an arithmetic number, because the mean of its divisors is an integer number (6107552296).

Almost surely, 2^12215104591 is an apocalyptic number.

12215104591 is a deficient number, since it is larger than the sum of its proper divisors (1).

12215104591 is an equidigital number, since it uses as much as digits as its factorization.

12215104591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3600, while the sum is 31.

The spelling of 12215104591 in words is "twelve billion, two hundred fifteen million, one hundred four thousand, five hundred ninety-one".