3221012312 has 32 divisors (see below), whose sum is σ = 6908862720. Its totient is φ = 1379095200.

The previous prime is 3221012303. The next prime is 3221012317. The reversal of 3221012312 is 2132101223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221012317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31493 + ... + 86219.

It is an arithmetic number, because the mean of its divisors is an integer number (215901960).

Almost surely, 2^3221012312 is an apocalyptic number.

It is an amenable number.

3221012312 is an abundant number, since it is smaller than the sum of its proper divisors (3687850408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3221012312 is a wasteful number, since it uses less digits than its factorization.

3221012312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55791 (or 55787 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 3221012312 is about 56753.9629629509. The cubic root of 3221012312 is about 1476.8309828298.

Adding to 3221012312 its reverse (2132101223), we get a palindrome (5353113535).

The spelling of 3221012312 in words is "three billion, two hundred twenty-one million, twelve thousand, three hundred twelve".