12566634325121 has 8 divisors (see below), whose sum is σ = 12572639923200. Its totient is φ = 12560629082400.

The previous prime is 12566634325111. The next prime is 12566634325123. The reversal of 12566634325121 is 12152343666521.

12566634325121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12566634325121 - 2⁴² = 8168587814017 is a prime.

It is a super-2 number, since 2×12566634325121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12566634325123) 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, 94170596 + ... + 94303946.

It is an arithmetic number, because the mean of its divisors is an integer number (1571579990400).

Almost surely, 2^{12566634325121} is an apocalyptic number.

It is an amenable number.

12566634325121 is a deficient number, since it is larger than the sum of its proper divisors (6005598079).

12566634325121 is a wasteful number, since it uses less digits than its factorization.

12566634325121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177679.

The product of its digits is 1555200, while the sum is 47.

The spelling of 12566634325121 in words is "twelve trillion, five hundred sixty-six billion, six hundred thirty-four million, three hundred twenty-five thousand, one hundred twenty-one".