12633233621 has 12 divisors (see below), whose sum is σ = 13337198700. Its totient is φ = 11964268800.

The previous prime is 12633233603. The next prime is 12633233623.

12633233621 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 9300480721 + 3332752900 = 96439^2 + 57730^2 .

It is not a de Polignac number, because 12633233621 - 2¹⁰ = 12633232597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12633233623) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64796 + ... + 171653.

It is an arithmetic number, because the mean of its divisors is an integer number (1111433225).

Almost surely, 2^12633233621 is an apocalyptic number.

It is an amenable number.

12633233621 is a deficient number, since it is larger than the sum of its proper divisors (703965079).

12633233621 is a wasteful number, since it uses less digits than its factorization.

12633233621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236596 (or 236573 counting only the distinct ones).

The product of its digits is 23328, while the sum is 32.

The spelling of 12633233621 in words is "twelve billion, six hundred thirty-three million, two hundred thirty-three thousand, six hundred twenty-one".