22363213 has 2 divisors, whose sum is σ = 22363214. Its totient is φ = 22363212.

The previous prime is 22363189. The next prime is 22363217. The reversal of 22363213 is 31236322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14645929 + 7717284 = 3827^2 + 2778^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22363213 is a prime.

It is a super-2 number, since 2×22363213² = 1000226591366738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22363217) 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, 11181606 + 11181607.

It is an arithmetic number, because the mean of its divisors is an integer number (11181607).

Almost surely, 2^22363213 is an apocalyptic number.

It is an amenable number.

22363213 is a deficient number, since it is larger than the sum of its proper divisors (1).

22363213 is an equidigital number, since it uses as much as digits as its factorization.

22363213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 22.

The square root of 22363213 is about 4728.9758933621. The cubic root of 22363213 is about 281.7375498614.

Adding to 22363213 its reverse (31236322), we get a palindrome (53599535).

It can be divided in two parts, 223 and 63213, that added together give a palindrome (63436).

The spelling of 22363213 in words is "twenty-two million, three hundred sixty-three thousand, two hundred thirteen".