3221221222 has 16 divisors (see below), whose sum is σ = 4994358912. Its totient is φ = 1556573760.

The previous prime is 3221221219. The next prime is 3221221229. The reversal of 3221221222 is 2221221223.

It is a super-2 number, since 2×3221221222² = 20752532322126346568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3221221222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221221229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12618 + ... + 81250.

It is an arithmetic number, because the mean of its divisors is an integer number (312147432).

Almost surely, 2^3221221222 is an apocalyptic number.

3221221222 is a deficient number, since it is larger than the sum of its proper divisors (1773137690).

3221221222 is a wasteful number, since it uses less digits than its factorization.

3221221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69423.

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

The square root of 3221221222 is about 56755.8034213242. The cubic root of 3221221222 is about 1476.8629104829.

Adding to 3221221222 its reverse (2221221223), we get a palindrome (5442442445).

Subtracting from 3221221222 its reverse (2221221223), we obtain a palindrome (999999999).

The spelling of 3221221222 in words is "three billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred twenty-two".