222626213 has 2 divisors, whose sum is σ = 222626214. Its totient is φ = 222626212.

The previous prime is 222626191. The next prime is 222626231. The reversal of 222626213 is 312626222.

Together with next prime (222626231) 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., 111471364 + 111154849 = 10558^2 + 10543^2 .

It is a cyclic number.

It is not a de Polignac number, because 222626213 - 2²⁰ = 221577637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222626273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111313106 + 111313107.

It is an arithmetic number, because the mean of its divisors is an integer number (111313107).

Almost surely, 2^222626213 is an apocalyptic number.

It is an amenable number.

222626213 is a deficient number, since it is larger than the sum of its proper divisors (1).

222626213 is an equidigital number, since it uses as much as digits as its factorization.

222626213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 26.

The square root of 222626213 is about 14920.6639597573. The cubic root of 222626213 is about 606.0736920554.

Subtracting 222626213 from its reverse (312626222), we obtain a palindrome (90000009).

The spelling of 222626213 in words is "two hundred twenty-two million, six hundred twenty-six thousand, two hundred thirteen".