122703125421 has 4 divisors (see below), whose sum is σ = 163604167232. Its totient is φ = 81802083612.

The previous prime is 122703125393. The next prime is 122703125429. The reversal of 122703125421 is 124521307221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 122703125421 - 2²¹ = 122701028269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122703125429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20450520901 + ... + 20450520906.

It is an arithmetic number, because the mean of its divisors is an integer number (40901041808).

Almost surely, 2^122703125421 is an apocalyptic number.

It is an amenable number.

122703125421 is a deficient number, since it is larger than the sum of its proper divisors (40901041811).

122703125421 is an equidigital number, since it uses as much as digits as its factorization.

122703125421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40901041810.

The product of its (nonzero) digits is 6720, while the sum is 30.

The spelling of 122703125421 in words is "one hundred twenty-two billion, seven hundred three million, one hundred twenty-five thousand, four hundred twenty-one".