3220322232221 has 4 divisors (see below), whose sum is σ = 3238936811772. Its totient is φ = 3201707652672.

The previous prime is 3220322232131. The next prime is 3220322232251. The reversal of 3220322232221 is 1222322230223.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2765189848996 + 455132383225 = 1662886^2 + 674635^2 .

It is a cyclic number.

It is not a de Polignac number, because 3220322232221 - 2¹⁴ = 3220322215837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3220322232251) 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, 9307289516 + ... + 9307289861.

It is an arithmetic number, because the mean of its divisors is an integer number (809734202943).

Almost surely, 2^{3220322232221} is an apocalyptic number.

It is an amenable number.

3220322232221 is a deficient number, since it is larger than the sum of its proper divisors (18614579551).

3220322232221 is a wasteful number, since it uses less digits than its factorization.

3220322232221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18614579550.

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 3220322232221 its reverse (1222322230223), we get a palindrome (4442644462444).

It can be divided in two parts, 3220322 and 232221, that added together give a palindrome (3452543).

The spelling of 3220322232221 in words is "three trillion, two hundred twenty billion, three hundred twenty-two million, two hundred thirty-two thousand, two hundred twenty-one".