330221 has 4 divisors (see below), whose sum is σ = 334944.
Its totient is φ = 325500.
The previous prime is 330217. The next prime is 330227. The reversal of 330221 is 122033.
Adding to 330221 its reverse (122033), we get a palindrome (452254).
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 330221 - 22 = 330217 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 (330227) 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, 2255 + ... + 2396.
It is an arithmetic number, because the mean of its divisors is an integer number (83736).
2330221 is an apocalyptic number.
It is an amenable number.
330221 is a deficient number, since it is larger than the sum of its proper divisors (4723).
330221 is an equidigital number, since it uses as much as digits as its factorization.
330221 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 4722.
The product of its (nonzero) digits is 36, while the sum is 11.
The square root of 330221 is about 574.6485882694.
The cubic root of 330221 is about 69.1196551561.
The spelling of 330221 in words is "three hundred thirty thousand, two hundred twenty-one".