12861027199 has 2 divisors, whose sum is σ = 12861027200. Its totient is φ = 12861027198.

The previous prime is 12861027169. The next prime is 12861027217. The reversal of 12861027199 is 99172016821.

It is a strong prime.

It is an emirp because it is prime and its reverse (99172016821) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12861027199 - 2³³ = 4271092607 is a prime.

It is a super-2 number, since 2×12861027199² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12861027169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6430513599 + 6430513600.

It is an arithmetic number, because the mean of its divisors is an integer number (6430513600).

Almost surely, 2^12861027199 is an apocalyptic number.

12861027199 is a deficient number, since it is larger than the sum of its proper divisors (1).

12861027199 is an equidigital number, since it uses as much as digits as its factorization.

12861027199 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 46.

The spelling of 12861027199 in words is "twelve billion, eight hundred sixty-one million, twenty-seven thousand, one hundred ninety-nine".