122155370677 has 2 divisors, whose sum is σ = 122155370678. Its totient is φ = 122155370676.

The previous prime is 122155370581. The next prime is 122155370681. The reversal of 122155370677 is 776073551221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115845610321 + 6309760356 = 340361^2 + 79434^2 .

It is an emirp because it is prime and its reverse (776073551221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 122155370677 - 2¹⁹ = 122154846389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122155371677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61077685338 + 61077685339.

It is an arithmetic number, because the mean of its divisors is an integer number (61077685339).

Almost surely, 2^122155370677 is an apocalyptic number.

It is an amenable number.

122155370677 is a deficient number, since it is larger than the sum of its proper divisors (1).

122155370677 is an equidigital number, since it uses as much as digits as its factorization.

122155370677 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 617400, while the sum is 46.

The spelling of 122155370677 in words is "one hundred twenty-two billion, one hundred fifty-five million, three hundred seventy thousand, six hundred seventy-seven".