330224021 has 4 divisors (see below), whose sum is σ = 337250112. Its totient is φ = 323197932.

The previous prime is 330224017. The next prime is 330224023. The reversal of 330224021 is 120422033.

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 330224021 - 2² = 330224017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (330224023) 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, 3512975 + ... + 3513068.

It is an arithmetic number, because the mean of its divisors is an integer number (84312528).

Almost surely, 2^330224021 is an apocalyptic number.

It is an amenable number.

330224021 is a deficient number, since it is larger than the sum of its proper divisors (7026091).

330224021 is an equidigital number, since it uses as much as digits as its factorization.

330224021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7026090.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 330224021 is about 18172.0670535853. The cubic root of 330224021 is about 691.1986593394.

Adding to 330224021 its reverse (120422033), we get a palindrome (450646054).

The spelling of 330224021 in words is "three hundred thirty million, two hundred twenty-four thousand, twenty-one".