3210222221 has 2 divisors, whose sum is σ = 3210222222. Its totient is φ = 3210222220.

The previous prime is 3210222199. The next prime is 3210222229. The reversal of 3210222221 is 1222220123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2511412996 + 698809225 = 50114^2 + 26435^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3210222221 is a prime.

It is a super-3 number, since 3×3210222221³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3210222221.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3210222229) 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, 1605111110 + 1605111111.

It is an arithmetic number, because the mean of its divisors is an integer number (1605111111).

Almost surely, 2^3210222221 is an apocalyptic number.

It is an amenable number.

3210222221 is a deficient number, since it is larger than the sum of its proper divisors (1).

3210222221 is an equidigital number, since it uses as much as digits as its factorization.

3210222221 is an odious number, because the sum of its binary digits is odd.

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

The square root of 3210222221 is about 56658.8229757732. The cubic root of 3210222221 is about 1475.1800559280.

Adding to 3210222221 its reverse (1222220123), we get a palindrome (4432442344).

The spelling of 3210222221 in words is "three billion, two hundred ten million, two hundred twenty-two thousand, two hundred twenty-one".