12235603021 has 2 divisors, whose sum is σ = 12235603022. Its totient is φ = 12235603020.

The previous prime is 12235603007. The next prime is 12235603067. The reversal of 12235603021 is 12030653221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12015228996 + 220374025 = 109614^2 + 14845^2 .

It is a cyclic number.

It is not a de Polignac number, because 12235603021 - 2¹³ = 12235594829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12235603421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6117801510 + 6117801511.

It is an arithmetic number, because the mean of its divisors is an integer number (6117801511).

Almost surely, 2^12235603021 is an apocalyptic number.

It is an amenable number.

12235603021 is a deficient number, since it is larger than the sum of its proper divisors (1).

12235603021 is an equidigital number, since it uses as much as digits as its factorization.

12235603021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 25.

The spelling of 12235603021 in words is "twelve billion, two hundred thirty-five million, six hundred three thousand, twenty-one".