122555231530421 has 2 divisors, whose sum is σ = 122555231530422. Its totient is φ = 122555231530420.

The previous prime is 122555231530411. The next prime is 122555231530513. The reversal of 122555231530421 is 124035132555221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102250420491025 + 20304811039396 = 10111895^2 + 4506086^2 .

It is a cyclic number.

It is not a de Polignac number, because 122555231530421 - 2²² = 122555227336117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122555231530411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61277615765210 + 61277615765211.

It is an arithmetic number, because the mean of its divisors is an integer number (61277615765211).

Almost surely, 2^{122555231530421} is an apocalyptic number.

It is an amenable number.

122555231530421 is a deficient number, since it is larger than the sum of its proper divisors (1).

122555231530421 is an equidigital number, since it uses as much as digits as its factorization.

122555231530421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360000, while the sum is 41.

The spelling of 122555231530421 in words is "one hundred twenty-two trillion, five hundred fifty-five billion, two hundred thirty-one million, five hundred thirty thousand, four hundred twenty-one".