12521112609 has 8 divisors (see below), whose sum is σ = 16741321920. Its totient is φ = 8324155856.

The previous prime is 12521112607. The next prime is 12521112619. The reversal of 12521112609 is 90621112521.

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 12521112609 - 2¹ = 12521112607 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12521112607) 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, 5811882 + ... + 5814035.

It is an arithmetic number, because the mean of its divisors is an integer number (2092665240).

Almost surely, 2^12521112609 is an apocalyptic number.

It is an amenable number.

12521112609 is a deficient number, since it is larger than the sum of its proper divisors (4220209311).

12521112609 is a wasteful number, since it uses less digits than its factorization.

12521112609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11626279.

The product of its (nonzero) digits is 2160, while the sum is 30.

The spelling of 12521112609 in words is "twelve billion, five hundred twenty-one million, one hundred twelve thousand, six hundred nine".