22112213 has 2 divisors, whose sum is σ = 22112214. Its totient is φ = 22112212.

The previous prime is 22112201. The next prime is 22112221. The reversal of 22112213 is 31221122.

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., 19731364 + 2380849 = 4442^2 + 1543^2 .

It is a cyclic number.

It is not a de Polignac number, because 22112213 - 2⁶ = 22112149 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22112813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11056106 + 11056107.

It is an arithmetic number, because the mean of its divisors is an integer number (11056107).

Almost surely, 2^22112213 is an apocalyptic number.

It is an amenable number.

22112213 is a deficient number, since it is larger than the sum of its proper divisors (1).

22112213 is an equidigital number, since it uses as much as digits as its factorization.

22112213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48, while the sum is 14.

The square root of 22112213 is about 4702.3624913441. The cubic root of 22112213 is about 280.6795272538.

Adding to 22112213 its reverse (31221122), we get a palindrome (53333335).

The spelling of 22112213 in words is "twenty-two million, one hundred twelve thousand, two hundred thirteen".