232221091 has 2 divisors, whose sum is σ = 232221092. Its totient is φ = 232221090.

The previous prime is 232221061. The next prime is 232221107. The reversal of 232221091 is 190122232.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 232221091 - 2²⁵ = 198666659 is a prime.

It is not a weakly prime, because it can be changed into another prime (232221001) 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, 116110545 + 116110546.

It is an arithmetic number, because the mean of its divisors is an integer number (116110546).

Almost surely, 2^232221091 is an apocalyptic number.

232221091 is a deficient number, since it is larger than the sum of its proper divisors (1).

232221091 is an equidigital number, since it uses as much as digits as its factorization.

232221091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 232221091 is about 15238.8021510879. The cubic root of 232221091 is about 614.6584932807.

The spelling of 232221091 in words is "two hundred thirty-two million, two hundred twenty-one thousand, ninety-one".