12522422521 has 8 divisors (see below), whose sum is σ = 14402496320. Its totient is φ = 10665137808.

The previous prime is 12522422509. The next prime is 12522422533.

12522422521 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (12522422509) and next prime (12522422533).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12522422521 - 2⁵ = 12522422489 is a prime.

It is a super-2 number, since 2×12522422521² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12522422521.

It is not an unprimeable number, because it can be changed into a prime (12522422551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5696091 + ... + 5698288.

It is an arithmetic number, because the mean of its divisors is an integer number (1800312040).

Almost surely, 2^12522422521 is an apocalyptic number.

It is an amenable number.

12522422521 is a deficient number, since it is larger than the sum of its proper divisors (1880073799).

12522422521 is a wasteful number, since it uses less digits than its factorization.

12522422521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11394543.

The product of its digits is 6400, while the sum is 28.

The spelling of 12522422521 in words is "twelve billion, five hundred twenty-two million, four hundred twenty-two thousand, five hundred twenty-one".