3222204221 has 2 divisors, whose sum is σ = 3222204222. Its totient is φ = 3222204220.

The previous prime is 3222204187. The next prime is 3222204241. The reversal of 3222204221 is 1224022223.

It is an a-pointer prime, because the next prime (3222204241) can be obtained adding 3222204221 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2226801721 + 995402500 = 47189^2 + 31550^2 .

It is a cyclic number.

It is not a de Polignac number, because 3222204221 - 2¹⁰ = 3222203197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3222204193 and 3222204202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3222204241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1611102110 + 1611102111.

It is an arithmetic number, because the mean of its divisors is an integer number (1611102111).

Almost surely, 2^3222204221 is an apocalyptic number.

It is an amenable number.

3222204221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3222204221 is an equidigital number, since it uses as much as digits as its factorization.

3222204221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 3222204221 is about 56764.4626593082. The cubic root of 3222204221 is about 1477.0131234006.

Adding to 3222204221 its reverse (1224022223), we get a palindrome (4446226444).

The spelling of 3222204221 in words is "three billion, two hundred twenty-two million, two hundred four thousand, two hundred twenty-one".