12243523521 has 8 divisors (see below), whose sum is σ = 16325226720. Its totient is φ = 8162084672.

The previous prime is 12243523489. The next prime is 12243523541. The reversal of 12243523521 is 12532534221.

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 12243523521 - 2⁵ = 12243523489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12243523541) 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, 106006 + ... + 189008.

It is an arithmetic number, because the mean of its divisors is an integer number (2040653340).

Almost surely, 2^12243523521 is an apocalyptic number.

It is an amenable number.

12243523521 is a deficient number, since it is larger than the sum of its proper divisors (4081703199).

12243523521 is an equidigital number, since it uses as much as digits as its factorization.

12243523521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132175.

The product of its digits is 14400, while the sum is 30.

The spelling of 12243523521 in words is "twelve billion, two hundred forty-three million, five hundred twenty-three thousand, five hundred twenty-one".