12122551127 has 2 divisors, whose sum is σ = 12122551128. Its totient is φ = 12122551126.

The previous prime is 12122551123. The next prime is 12122551151. The reversal of 12122551127 is 72115522121.

It is a weak prime.

It is an emirp because it is prime and its reverse (72115522121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12122551127 - 2² = 12122551123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12122551127.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12122551121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6061275563 + 6061275564.

It is an arithmetic number, because the mean of its divisors is an integer number (6061275564).

Almost surely, 2^12122551127 is an apocalyptic number.

12122551127 is a deficient number, since it is larger than the sum of its proper divisors (1).

12122551127 is an equidigital number, since it uses as much as digits as its factorization.

12122551127 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2800, while the sum is 29.

The spelling of 12122551127 in words is "twelve billion, one hundred twenty-two million, five hundred fifty-one thousand, one hundred twenty-seven".