3221320516 has 24 divisors (see below), whose sum is σ = 5680584000. Its totient is φ = 1598334624.

The previous prime is 3221320489. The next prime is 3221320541. The reversal of 3221320516 is 6150231223.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 360025 + ... + 368863.

It is an arithmetic number, because the mean of its divisors is an integer number (236691000).

Almost surely, 2^3221320516 is an apocalyptic number.

It is an amenable number.

3221320516 is a deficient number, since it is larger than the sum of its proper divisors (2459263484).

3221320516 is a wasteful number, since it uses less digits than its factorization.

3221320516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9531 (or 9529 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 3221320516 is about 56756.6781621335. The cubic root of 3221320516 is about 1476.8780850713.

Adding to 3221320516 its reverse (6150231223), we get a palindrome (9371551739).

The spelling of 3221320516 in words is "three billion, two hundred twenty-one million, three hundred twenty thousand, five hundred sixteen".