3221022222221 has 4 divisors (see below), whose sum is σ = 3222212111232. Its totient is φ = 3219832333212.

The previous prime is 3221022222193. The next prime is 3221022222289. The reversal of 3221022222221 is 1222222201223.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3221022222221 - 2²⁶ = 3220955113357 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3221022222421) 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, 594940445 + ... + 594945858.

It is an arithmetic number, because the mean of its divisors is an integer number (805553027808).

Almost surely, 2^{3221022222221} is an apocalyptic number.

It is an amenable number.

3221022222221 is a deficient number, since it is larger than the sum of its proper divisors (1189889011).

3221022222221 is a wasteful number, since it uses less digits than its factorization.

3221022222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189889010.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 3221022222221 its reverse (1222222201223), we get a palindrome (4443244423444).

The spelling of 3221022222221 in words is "three trillion, two hundred twenty-one billion, twenty-two million, two hundred twenty-two thousand, two hundred twenty-one".