22316213 has 2 divisors, whose sum is σ = 22316214. Its totient is φ = 22316212.

The previous prime is 22316201. The next prime is 22316221. The reversal of 22316213 is 31261322.

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., 17960644 + 4355569 = 4238^2 + 2087^2 .

It is a cyclic number.

It is not a de Polignac number, because 22316213 - 2⁴ = 22316197 is a prime.

It is a super-3 number, since 3×22316213³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22316263) 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, 11158106 + 11158107.

It is an arithmetic number, because the mean of its divisors is an integer number (11158107).

Almost surely, 2^22316213 is an apocalyptic number.

It is an amenable number.

22316213 is a deficient number, since it is larger than the sum of its proper divisors (1).

22316213 is an equidigital number, since it uses as much as digits as its factorization.

22316213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 20.

The square root of 22316213 is about 4724.0039161711. The cubic root of 22316213 is about 281.5400387046.

Adding to 22316213 its reverse (31261322), we get a palindrome (53577535).

The spelling of 22316213 in words is "twenty-two million, three hundred sixteen thousand, two hundred thirteen".