12105316087 has 2 divisors, whose sum is σ = 12105316088. Its totient is φ = 12105316086.

The previous prime is 12105316063. The next prime is 12105316127. The reversal of 12105316087 is 78061350121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12105316087 - 2¹⁹ = 12104791799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12105386087) 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, 6052658043 + 6052658044.

It is an arithmetic number, because the mean of its divisors is an integer number (6052658044).

Almost surely, 2^12105316087 is an apocalyptic number.

12105316087 is a deficient number, since it is larger than the sum of its proper divisors (1).

12105316087 is an equidigital number, since it uses as much as digits as its factorization.

12105316087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 34.

The spelling of 12105316087 in words is "twelve billion, one hundred five million, three hundred sixteen thousand, eighty-seven".