3222131221220 has 72 divisors (see below), whose sum is σ = 7309746823680. Its totient is φ = 1192477550080.

The previous prime is 3222131221213. The next prime is 3222131221229. The reversal of 3222131221220 is 221221312223.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3222131221229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4383236 + ... + 5065275.

It is an arithmetic number, because the mean of its divisors is an integer number (101524261440).

Almost surely, 2^{3222131221220} is an apocalyptic number.

It is an amenable number.

3222131221220 is an abundant number, since it is smaller than the sum of its proper divisors (4087615602460).

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

3222131221220 is a wasteful number, since it uses less digits than its factorization.

3222131221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9448613 (or 9448594 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 3222131221220 its reverse (221221312223), we get a palindrome (3443352533443).

The spelling of 3222131221220 in words is "three trillion, two hundred twenty-two billion, one hundred thirty-one million, two hundred twenty-one thousand, two hundred twenty".