122553255691 has 2 divisors, whose sum is σ = 122553255692. Its totient is φ = 122553255690.

The previous prime is 122553255673. The next prime is 122553255709. The reversal of 122553255691 is 196552355221.

It is a balanced prime because it is at equal distance from previous prime (122553255673) and next prime (122553255709).

It is an emirp because it is prime and its reverse (196552355221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122553255691 - 2⁷ = 122553255563 is a prime.

It is not a weakly prime, because it can be changed into another prime (122553255641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61276627845 + 61276627846.

It is an arithmetic number, because the mean of its divisors is an integer number (61276627846).

Almost surely, 2^122553255691 is an apocalyptic number.

122553255691 is a deficient number, since it is larger than the sum of its proper divisors (1).

122553255691 is an equidigital number, since it uses as much as digits as its factorization.

122553255691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 810000, while the sum is 46.

The spelling of 122553255691 in words is "one hundred twenty-two billion, five hundred fifty-three million, two hundred fifty-five thousand, six hundred ninety-one".