212222233213 has 2 divisors, whose sum is σ = 212222233214. Its totient is φ = 212222233212.

The previous prime is 212222233163. The next prime is 212222233231. The reversal of 212222233213 is 312332222212.

Together with next prime (212222233231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203381156484 + 8841076729 = 450978^2 + 94027^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212222233213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212222233253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106111116606 + 106111116607.

It is an arithmetic number, because the mean of its divisors is an integer number (106111116607).

Almost surely, 2^212222233213 is an apocalyptic number.

It is an amenable number.

212222233213 is a deficient number, since it is larger than the sum of its proper divisors (1).

212222233213 is an equidigital number, since it uses as much as digits as its factorization.

212222233213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 25.

Adding to 212222233213 its reverse (312332222212), we get a palindrome (524554455425).

The spelling of 212222233213 in words is "two hundred twelve billion, two hundred twenty-two million, two hundred thirty-three thousand, two hundred thirteen".