330000221 has 4 divisors (see below), whose sum is σ = 331441500. Its totient is φ = 328558944.

The previous prime is 330000217. The next prime is 330000233. The reversal of 330000221 is 122000033.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 279391225 + 50608996 = 16715^2 + 7114^2 .

It is a cyclic number.

It is not a de Polignac number, because 330000221 - 2² = 330000217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (330000211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 720296 + ... + 720753.

It is an arithmetic number, because the mean of its divisors is an integer number (82860375).

Almost surely, 2^330000221 is an apocalyptic number.

It is an amenable number.

330000221 is a deficient number, since it is larger than the sum of its proper divisors (1441279).

330000221 is a wasteful number, since it uses less digits than its factorization.

330000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441278.

The product of its (nonzero) digits is 36, while the sum is 11.

The square root of 330000221 is about 18165.9082074087. The cubic root of 330000221 is about 691.0424772641.

Adding to 330000221 its reverse (122000033), we get a palindrome (452000254).

The spelling of 330000221 in words is "three hundred thirty million, two hundred twenty-one", and thus it is an aban number.