3321030221 has 4 divisors (see below), whose sum is σ = 3325561692. Its totient is φ = 3316498752.

The previous prime is 3321030211. The next prime is 3321030233. The reversal of 3321030221 is 1220301233.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1220301233 = 199 ⋅6132167.

It can be written as a sum of positive squares in 2 ways, for example, as 2960448100 + 360582121 = 54410^2 + 18989^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3321030221 is a prime.

It is a super-2 number, since 2×3321030221² = 22058483457590617682, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3321030221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3321030211) 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, 2264636 + ... + 2266101.

It is an arithmetic number, because the mean of its divisors is an integer number (831390423).

Almost surely, 2^3321030221 is an apocalyptic number.

It is an amenable number.

3321030221 is a deficient number, since it is larger than the sum of its proper divisors (4531471).

3321030221 is an equidigital number, since it uses as much as digits as its factorization.

3321030221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4531470.

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

The square root of 3321030221 is about 57628.3803433690. The cubic root of 3321030221 is about 1491.9614755546.

Adding to 3321030221 its reverse (1220301233), we get a palindrome (4541331454).

The spelling of 3321030221 in words is "three billion, three hundred twenty-one million, thirty thousand, two hundred twenty-one".