233221322309 has 2 divisors, whose sum is σ = 233221322310. Its totient is φ = 233221322308.

The previous prime is 233221322281. The next prime is 233221322329. The reversal of 233221322309 is 903223122332.

233221322309 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132274053025 + 100947269284 = 363695^2 + 317722^2 .

It is a cyclic number.

It is not a de Polignac number, because 233221322309 - 2¹⁶ = 233221256773 is a prime.

It is a super-2 number, since 2×233221322309² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (233221322329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116610661154 + 116610661155.

It is an arithmetic number, because the mean of its divisors is an integer number (116610661155).

Almost surely, 2^233221322309 is an apocalyptic number.

It is an amenable number.

233221322309 is a deficient number, since it is larger than the sum of its proper divisors (1).

233221322309 is an equidigital number, since it uses as much as digits as its factorization.

233221322309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 32.

The spelling of 233221322309 in words is "two hundred thirty-three billion, two hundred twenty-one million, three hundred twenty-two thousand, three hundred nine".