3221212213 has 2 divisors, whose sum is σ = 3221212214. Its totient is φ = 3221212212.

The previous prime is 3221212199. The next prime is 3221212231. The reversal of 3221212213 is 3122121223.

Together with next prime (3221212231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2081001924 + 1140210289 = 45618^2 + 33767^2 .

It is a cyclic number.

It is not a de Polignac number, because 3221212213 - 2²⁹ = 2684341301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3221216213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1610606106 + 1610606107.

It is an arithmetic number, because the mean of its divisors is an integer number (1610606107).

Almost surely, 2^3221212213 is an apocalyptic number.

It is an amenable number.

3221212213 is a deficient number, since it is larger than the sum of its proper divisors (1).

3221212213 is an equidigital number, since it uses as much as digits as its factorization.

3221212213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 288, while the sum is 19.

The square root of 3221212213 is about 56755.7240549356. The cubic root of 3221212213 is about 1476.8615336686.

Adding to 3221212213 its reverse (3122121223), we get a palindrome (6343333436).

The spelling of 3221212213 in words is "three billion, two hundred twenty-one million, two hundred twelve thousand, two hundred thirteen".