1232512621 has 2 divisors, whose sum is σ = 1232512622. Its totient is φ = 1232512620.

The previous prime is 1232512609. The next prime is 1232512627. The reversal of 1232512621 is 1262152321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1050667396 + 181845225 = 32414^2 + 13485^2 .

It is a cyclic number.

It is not a de Polignac number, because 1232512621 - 2¹⁹ = 1231988333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1232512627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616256310 + 616256311.

It is an arithmetic number, because the mean of its divisors is an integer number (616256311).

Almost surely, 2^1232512621 is an apocalyptic number.

It is an amenable number.

1232512621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232512621 is an equidigital number, since it uses as much as digits as its factorization.

1232512621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1440, while the sum is 25.

The square root of 1232512621 is about 35107.1591132065. The cubic root of 1232512621 is about 1072.1703468644.

Adding to 1232512621 its reverse (1262152321), we get a palindrome (2494664942).

The spelling of 1232512621 in words is "one billion, two hundred thirty-two million, five hundred twelve thousand, six hundred twenty-one".