3221231212 has 12 divisors (see below), whose sum is σ = 5640686856. Its totient is φ = 1609606400.

The previous prime is 3221231203. The next prime is 3221231219. The reversal of 3221231212 is 2121321223.

It is a self number, because there is not a number n which added to its sum of digits gives 3221231212.

It is not an unprimeable number, because it can be changed into a prime (3221231219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 245098 + ... + 257905.

It is an arithmetic number, because the mean of its divisors is an integer number (470057238).

Almost surely, 2^3221231212 is an apocalyptic number.

It is an amenable number.

3221231212 is a deficient number, since it is larger than the sum of its proper divisors (2419455644).

3221231212 is a wasteful number, since it uses less digits than its factorization.

3221231212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 504608 (or 504606 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 3221231212 is about 56755.8914298771. The cubic root of 3221231212 is about 1476.8644372170.

Adding to 3221231212 its reverse (2121321223), we get a palindrome (5342552435).

The spelling of 3221231212 in words is "three billion, two hundred twenty-one million, two hundred thirty-one thousand, two hundred twelve".