352338221 has 2 divisors, whose sum is σ = 352338222. Its totient is φ = 352338220.

The previous prime is 352338199. The next prime is 352338227. The reversal of 352338221 is 122833253.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 351150121 + 1188100 = 18739^2 + 1090^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-352338221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (352338227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176169110 + 176169111.

It is an arithmetic number, because the mean of its divisors is an integer number (176169111).

Almost surely, 2^352338221 is an apocalyptic number.

It is an amenable number.

352338221 is a deficient number, since it is larger than the sum of its proper divisors (1).

352338221 is an equidigital number, since it uses as much as digits as its factorization.

352338221 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 29.

The square root of 352338221 is about 18770.6744950734. The cubic root of 352338221 is about 706.2957382235.

The spelling of 352338221 in words is "three hundred fifty-two million, three hundred thirty-eight thousand, two hundred twenty-one".