12331063621 has 4 divisors (see below), whose sum is σ = 12343237452. Its totient is φ = 12318889792.

The previous prime is 12331063607. The next prime is 12331063637. The reversal of 12331063621 is 12636013321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1076824225 + 11254239396 = 32815^2 + 106086^2 .

It is a cyclic number.

It is not a de Polignac number, because 12331063621 - 2²⁷ = 12196845893 is a prime.

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 12331063621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12331063651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6085396 + ... + 6087421.

It is an arithmetic number, because the mean of its divisors is an integer number (3085809363).

Almost surely, 2^12331063621 is an apocalyptic number.

It is an amenable number.

12331063621 is a deficient number, since it is larger than the sum of its proper divisors (12173831).

12331063621 is a wasteful number, since it uses less digits than its factorization.

12331063621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12173830.

The product of its (nonzero) digits is 3888, while the sum is 28.

Adding to 12331063621 its reverse (12636013321), we get a palindrome (24967076942).

The spelling of 12331063621 in words is "twelve billion, three hundred thirty-one million, sixty-three thousand, six hundred twenty-one".