12372182621 has 2 divisors, whose sum is σ = 12372182622. Its totient is φ = 12372182620.

The previous prime is 12372182617. The next prime is 12372182629. The reversal of 12372182621 is 12628127321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9685315396 + 2686867225 = 98414^2 + 51835^2 .

It is a cyclic number.

It is not a de Polignac number, because 12372182621 - 2² = 12372182617 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12372182629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6186091310 + 6186091311.

It is an arithmetic number, because the mean of its divisors is an integer number (6186091311).

Almost surely, 2^12372182621 is an apocalyptic number.

It is an amenable number.

12372182621 is a deficient number, since it is larger than the sum of its proper divisors (1).

12372182621 is an equidigital number, since it uses as much as digits as its factorization.

12372182621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 35.

The spelling of 12372182621 in words is "twelve billion, three hundred seventy-two million, one hundred eighty-two thousand, six hundred twenty-one".