232404890021 has 2 divisors, whose sum is σ = 232404890022. Its totient is φ = 232404890020.

The previous prime is 232404889993. The next prime is 232404890077. The reversal of 232404890021 is 120098404232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163256402500 + 69148487521 = 404050^2 + 262961^2 .

It is a cyclic number.

It is not a de Polignac number, because 232404890021 - 2³⁰ = 231331148197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232404896021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116202445010 + 116202445011.

It is an arithmetic number, because the mean of its divisors is an integer number (116202445011).

Almost surely, 2^232404890021 is an apocalyptic number.

It is an amenable number.

232404890021 is a deficient number, since it is larger than the sum of its proper divisors (1).

232404890021 is an equidigital number, since it uses as much as digits as its factorization.

232404890021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 232404890021 in words is "two hundred thirty-two billion, four hundred four million, eight hundred ninety thousand, twenty-one".