332130221 has 2 divisors, whose sum is σ = 332130222. Its totient is φ = 332130220.

The previous prime is 332130209. The next prime is 332130223. The reversal of 332130221 is 122031233.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 232410025 + 99720196 = 15245^2 + 9986^2 .

It is a cyclic number.

It is not a de Polignac number, because 332130221 - 2¹⁰ = 332129197 is a prime.

It is a super-2 number, since 2×332130221² = 220620967403017682, which contains 22 as substring.

Together with 332130223, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 332130221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (332130223) 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, 166065110 + 166065111.

It is an arithmetic number, because the mean of its divisors is an integer number (166065111).

Almost surely, 2^332130221 is an apocalyptic number.

It is an amenable number.

332130221 is a deficient number, since it is larger than the sum of its proper divisors (1).

332130221 is an equidigital number, since it uses as much as digits as its factorization.

332130221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 332130221 is about 18224.4402108817. The cubic root of 332130221 is about 692.5260772066.

Adding to 332130221 its reverse (122031233), we get a palindrome (454161454).

The spelling of 332130221 in words is "three hundred thirty-two million, one hundred thirty thousand, two hundred twenty-one".