3201222221 has 8 divisors (see below), whose sum is σ = 3238364160. Its totient is φ = 3164106528.

The previous prime is 3201222173. The next prime is 3201222251. The reversal of 3201222221 is 1222221023.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3201222221 - 2¹⁰ = 3201221197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3201222221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3201222251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 348530 + ... + 357596.

It is an arithmetic number, because the mean of its divisors is an integer number (404795520).

Almost surely, 2^3201222221 is an apocalyptic number.

It is an amenable number.

3201222221 is a deficient number, since it is larger than the sum of its proper divisors (37141939).

3201222221 is an equidigital number, since it uses as much as digits as its factorization.

3201222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13123.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 3201222221 is about 56579.3444730495. The cubic root of 3201222221 is about 1473.8001881030.

Adding to 3201222221 its reverse (1222221023), we get a palindrome (4423443244).

The spelling of 3201222221 in words is "three billion, two hundred one million, two hundred twenty-two thousand, two hundred twenty-one".