3221220220312 has 32 divisors (see below), whose sum is σ = 6130095796800. Its totient is φ = 1586529277344.

The previous prime is 3221220220249. The next prime is 3221220220363. The reversal of 3221220220312 is 2130220221223.

It is a congruent number.

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, 33485739 + ... + 33581797.

It is an arithmetic number, because the mean of its divisors is an integer number (191565493650).

Almost surely, 2^{3221220220312} is an apocalyptic number.

It is an amenable number.

3221220220312 is a deficient number, since it is larger than the sum of its proper divisors (2908875576488).

3221220220312 is a wasteful number, since it uses less digits than its factorization.

3221220220312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158695 (or 158691 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 3221220220312 its reverse (2130220221223), we get a palindrome (5351440441535).

The spelling of 3221220220312 in words is "three trillion, two hundred twenty-one billion, two hundred twenty million, two hundred twenty thousand, three hundred twelve".