3220122221 has 2 divisors, whose sum is σ = 3220122222. Its totient is φ = 3220122220.

The previous prime is 3220122197. The next prime is 3220122251. The reversal of 3220122221 is 1222210223.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1698264100 + 1521858121 = 41210^2 + 39011^2 .

It is a cyclic number.

It is not a de Polignac number, because 3220122221 - 2²² = 3215927917 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3220122221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3220122251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610061110 + 1610061111.

It is an arithmetic number, because the mean of its divisors is an integer number (1610061111).

Almost surely, 2^3220122221 is an apocalyptic number.

It is an amenable number.

3220122221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3220122221 is an equidigital number, since it uses as much as digits as its factorization.

3220122221 is an evil number, because the sum of its binary digits is even.

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

The square root of 3220122221 is about 56746.1207572817. The cubic root of 3220122221 is about 1476.6949350141.

Adding to 3220122221 its reverse (1222210223), we get a palindrome (4442332444).

The spelling of 3220122221 in words is "three billion, two hundred twenty million, one hundred twenty-two thousand, two hundred twenty-one".