3321430221 has 16 divisors (see below), whose sum is σ = 4454846784. Its totient is φ = 2201186304.

The previous prime is 3321430163. The next prime is 3321430279. The reversal of 3321430221 is 1220341233.

It is an interprime number because it is at equal distance from previous prime (3321430163) and next prime (3321430279).

It is not a de Polignac number, because 3321430221 - 2⁶ = 3321430157 is a prime.

It is a super-2 number, since 2×3321430221² = 22063797425944217682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3321430421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 399115 + ... + 407351.

It is an arithmetic number, because the mean of its divisors is an integer number (278427924).

Almost surely, 2^3321430221 is an apocalyptic number.

It is an amenable number.

3321430221 is a deficient number, since it is larger than the sum of its proper divisors (1133416563).

3321430221 is a wasteful number, since it uses less digits than its factorization.

3321430221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9020.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 3321430221 is about 57631.8507511255. The cubic root of 3321430221 is about 1492.0213726942.

Adding to 3321430221 its reverse (1220341233), we get a palindrome (4541771454).

The spelling of 3321430221 in words is "three billion, three hundred twenty-one million, four hundred thirty thousand, two hundred twenty-one".