22214813 has 2 divisors, whose sum is σ = 22214814. Its totient is φ = 22214812.

The previous prime is 22214809. The next prime is 22214833. The reversal of 22214813 is 31841222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21362884 + 851929 = 4622^2 + 923^2 .

It is a cyclic number.

It is not a de Polignac number, because 22214813 - 2² = 22214809 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22214833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11107406 + 11107407.

It is an arithmetic number, because the mean of its divisors is an integer number (11107407).

Almost surely, 2^22214813 is an apocalyptic number.

It is an amenable number.

22214813 is a deficient number, since it is larger than the sum of its proper divisors (1).

22214813 is an equidigital number, since it uses as much as digits as its factorization.

22214813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768, while the sum is 23.

The square root of 22214813 is about 4713.2592757030. The cubic root of 22214813 is about 281.1129723938.

The spelling of 22214813 in words is "twenty-two million, two hundred fourteen thousand, eight hundred thirteen".