232230221 has 2 divisors, whose sum is σ = 232230222. Its totient is φ = 232230220.

The previous prime is 232230211. The next prime is 232230223. The reversal of 232230221 is 122032232.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213481321 + 18748900 = 14611^2 + 4330^2 .

It is a cyclic number.

It is not a de Polignac number, because 232230221 - 2¹⁴ = 232213837 is a prime.

It is a Sophie Germain prime.

Together with 232230223, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 232230221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232230223) 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, 116115110 + 116115111.

It is an arithmetic number, because the mean of its divisors is an integer number (116115111).

Almost surely, 2^232230221 is an apocalyptic number.

It is an amenable number.

232230221 is a deficient number, since it is larger than the sum of its proper divisors (1).

232230221 is an equidigital number, since it uses as much as digits as its factorization.

232230221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 232230221 is about 15239.1017123714. The cubic root of 232230221 is about 614.6665484757. Note that the first 3 decimals are identical.

Adding to 232230221 its reverse (122032232), we get a palindrome (354262453).

The spelling of 232230221 in words is "two hundred thirty-two million, two hundred thirty thousand, two hundred twenty-one".