15422500121 has 16 divisors (see below), whose sum is σ = 18414051840. Its totient is φ = 12637060800.

The previous prime is 15422500117. The next prime is 15422500129. The reversal of 15422500121 is 12100522451.

It is not a de Polignac number, because 15422500121 - 2² = 15422500117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15422500129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 355601 + ... + 396606.

It is an arithmetic number, because the mean of its divisors is an integer number (1150878240).

Almost surely, 2^15422500121 is an apocalyptic number.

It is an amenable number.

15422500121 is a deficient number, since it is larger than the sum of its proper divisors (2991551719).

15422500121 is a wasteful number, since it uses less digits than its factorization.

15422500121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 752344.

The product of its (nonzero) digits is 800, while the sum is 23.

The spelling of 15422500121 in words is "fifteen billion, four hundred twenty-two million, five hundred thousand, one hundred twenty-one".