212212213 has 2 divisors, whose sum is σ = 212212214. Its totient is φ = 212212212.

The previous prime is 212212201. The next prime is 212212219. The reversal of 212212213 is 312212212.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109453444 + 102758769 = 10462^2 + 10137^2 .

It is a cyclic number.

It is not a de Polignac number, because 212212213 - 2¹⁷ = 212081141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212212219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106106106 + 106106107.

It is an arithmetic number, because the mean of its divisors is an integer number (106106107).

Almost surely, 2^212212213 is an apocalyptic number.

It is an amenable number.

212212213 is a deficient number, since it is larger than the sum of its proper divisors (1).

212212213 is an equidigital number, since it uses as much as digits as its factorization.

212212213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96, while the sum is 16.

The square root of 212212213 is about 14567.5053801260. The cubic root of 212212213 is about 596.4720868527.

Adding to 212212213 its reverse (312212212), we get a palindrome (524424425).

Subtracting 212212213 from its reverse (312212212), we obtain a palindrome (99999999).

The spelling of 212212213 in words is "two hundred twelve million, two hundred twelve thousand, two hundred thirteen".