122554936421 has 2 divisors, whose sum is σ = 122554936422. Its totient is φ = 122554936420.

The previous prime is 122554936397. The next prime is 122554936463. The reversal of 122554936421 is 124639455221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93137884225 + 29417052196 = 305185^2 + 171514^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122554936421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122554936121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61277468210 + 61277468211.

It is an arithmetic number, because the mean of its divisors is an integer number (61277468211).

Almost surely, 2^122554936421 is an apocalyptic number.

It is an amenable number.

122554936421 is a deficient number, since it is larger than the sum of its proper divisors (1).

122554936421 is an equidigital number, since it uses as much as digits as its factorization.

122554936421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 518400, while the sum is 44.

The spelling of 122554936421 in words is "one hundred twenty-two billion, five hundred fifty-four million, nine hundred thirty-six thousand, four hundred twenty-one".