232221013 has 2 divisors, whose sum is σ = 232221014. Its totient is φ = 232221012.

The previous prime is 232221001. The next prime is 232221061. The reversal of 232221013 is 310122232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132181009 + 100040004 = 11497^2 + 10002^2 .

It is a cyclic number.

It is not a de Polignac number, because 232221013 - 2⁵ = 232220981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (232225013) 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, 116110506 + 116110507.

It is an arithmetic number, because the mean of its divisors is an integer number (116110507).

Almost surely, 2^232221013 is an apocalyptic number.

It is an amenable number.

232221013 is a deficient number, since it is larger than the sum of its proper divisors (1).

232221013 is an equidigital number, since it uses as much as digits as its factorization.

232221013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 232221013 is about 15238.7995918314. The cubic root of 232221013 is about 614.6584244622.

Adding to 232221013 its reverse (310122232), we get a palindrome (542343245).

The spelling of 232221013 in words is "two hundred thirty-two million, two hundred twenty-one thousand, thirteen".