22252213 has 2 divisors, whose sum is σ = 22252214. Its totient is φ = 22252212.

The previous prime is 22252189. The next prime is 22252229. The reversal of 22252213 is 31225222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14311089 + 7941124 = 3783^2 + 2818^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22252213 is a prime.

It is equal to p_1404064 and since 22252213 and 1404064 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22252913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11126106 + 11126107.

It is an arithmetic number, because the mean of its divisors is an integer number (11126107).

Almost surely, 2^22252213 is an apocalyptic number.

It is an amenable number.

22252213 is a deficient number, since it is larger than the sum of its proper divisors (1).

22252213 is an equidigital number, since it uses as much as digits as its factorization.

22252213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 480, while the sum is 19.

The square root of 22252213 is about 4717.2251377266. The cubic root of 22252213 is about 281.2706409213.

Adding to 22252213 its reverse (31225222), we get a palindrome (53477435).

The spelling of 22252213 in words is "twenty-two million, two hundred fifty-two thousand, two hundred thirteen".