3221445213 has 24 divisors (see below), whose sum is σ = 5319537600. Its totient is φ = 1840273344.

The previous prime is 3221445181. The next prime is 3221445217. The reversal of 3221445213 is 3125441223.

3221445213 is a `hidden beast` number, since 3 + 2 + 2 + 1 + 445 + 213 = 666.

It is not a de Polignac number, because 3221445213 - 2⁵ = 3221445181 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221445217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 302778 + ... + 313236.

It is an arithmetic number, because the mean of its divisors is an integer number (221647400).

Almost surely, 2^3221445213 is an apocalyptic number.

It is an amenable number.

3221445213 is a deficient number, since it is larger than the sum of its proper divisors (2098092387).

3221445213 is a wasteful number, since it uses less digits than its factorization.

3221445213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15361 (or 15358 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 3221445213 is about 56757.7766742144. The cubic root of 3221445213 is about 1476.8971414272.

Adding to 3221445213 its reverse (3125441223), we get a palindrome (6346886436).

The spelling of 3221445213 in words is "three billion, two hundred twenty-one million, four hundred forty-five thousand, two hundred thirteen".