330020221 has 2 divisors, whose sum is σ = 330020222. Its totient is φ = 330020220.

The previous prime is 330020213. The next prime is 330020233. The reversal of 330020221 is 122020033.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195692121 + 134328100 = 13989^2 + 11590^2 .

It is a cyclic number.

It is not a de Polignac number, because 330020221 - 2³ = 330020213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (330020921) 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, 165010110 + 165010111.

It is an arithmetic number, because the mean of its divisors is an integer number (165010111).

Almost surely, 2^330020221 is an apocalyptic number.

It is an amenable number.

330020221 is a deficient number, since it is larger than the sum of its proper divisors (1).

330020221 is an equidigital number, since it uses as much as digits as its factorization.

330020221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 13.

The square root of 330020221 is about 18166.4586807666. The cubic root of 330020221 is about 691.0564374268.

Adding to 330020221 its reverse (122020033), we get a palindrome (452040254).

The spelling of 330020221 in words is "three hundred thirty million, twenty thousand, two hundred twenty-one".