3221021224 has 16 divisors (see below), whose sum is σ = 6051287700. Its totient is φ = 1607344512.

The previous prime is 3221021203. The next prime is 3221021239. The reversal of 3221021224 is 4221201223.

It can be written as a sum of positive squares in 2 ways, for example, as 2897668900 + 323352324 = 53830^2 + 17982^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391437 + ... + 399580.

Almost surely, 2^3221021224 is an apocalyptic number.

It is an amenable number.

3221021224 is a deficient number, since it is larger than the sum of its proper divisors (2830266476).

3221021224 is a wasteful number, since it uses less digits than its factorization.

3221021224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791532 (or 791528 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 3221021224 is about 56754.0414772375. The cubic root of 3221021224 is about 1476.8323448763.

Adding to 3221021224 its reverse (4221201223), we get a palindrome (7442222447).

The spelling of 3221021224 in words is "three billion, two hundred twenty-one million, twenty-one thousand, two hundred twenty-four".