122425122521421 has 24 divisors (see below), whose sum is σ = 182552342279424. Its totient is φ = 78978905772480.

The previous prime is 122425122521419. The next prime is 122425122521423. The reversal of 122425122521421 is 124125221524221.

122425122521421 is a `hidden beast` number, since 1 + 2 + 2 + 4 + 2 + 5 + 1 + 225 + 2 + 1 + 421 = 666.

It is an interprime number because it is at equal distance from previous prime (122425122521419) and next prime (122425122521423).

It is not a de Polignac number, because 122425122521421 - 2¹ = 122425122521419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122425122521423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9632856 + ... + 18375041.

It is an arithmetic number, because the mean of its divisors is an integer number (7606347594976).

Almost surely, 2^{122425122521421} is an apocalyptic number.

It is an amenable number.

122425122521421 is a deficient number, since it is larger than the sum of its proper divisors (60127219758003).

122425122521421 is a wasteful number, since it uses less digits than its factorization.

122425122521421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28023601 (or 28023598 counting only the distinct ones).

The product of its digits is 51200, while the sum is 36.

The spelling of 122425122521421 in words is "one hundred twenty-two trillion, four hundred twenty-five billion, one hundred twenty-two million, five hundred twenty-one thousand, four hundred twenty-one".