12777555211 has 2 divisors, whose sum is σ = 12777555212. Its totient is φ = 12777555210.

The previous prime is 12777555139. The next prime is 12777555223. The reversal of 12777555211 is 11255577721.

It is a strong prime.

It is an emirp because it is prime and its reverse (11255577721) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12777555211 - 2⁷ = 12777555083 is a prime.

It is not a weakly prime, because it can be changed into another prime (12777550211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6388777605 + 6388777606.

It is an arithmetic number, because the mean of its divisors is an integer number (6388777606).

Almost surely, 2^12777555211 is an apocalyptic number.

12777555211 is a deficient number, since it is larger than the sum of its proper divisors (1).

12777555211 is an equidigital number, since it uses as much as digits as its factorization.

12777555211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 171500, while the sum is 43.

The spelling of 12777555211 in words is "twelve billion, seven hundred seventy-seven million, five hundred fifty-five thousand, two hundred eleven".