22424219 has 2 divisors, whose sum is σ = 22424220. Its totient is φ = 22424218.

The previous prime is 22424209. The next prime is 22424231. The reversal of 22424219 is 91242422.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22424219 is a prime.

It is a super-2 number, since 2×22424219² = 1005691195519922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22424209) 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, 11212109 + 11212110.

It is an arithmetic number, because the mean of its divisors is an integer number (11212110).

Almost surely, 2^22424219 is an apocalyptic number.

22424219 is a deficient number, since it is larger than the sum of its proper divisors (1).

22424219 is an equidigital number, since it uses as much as digits as its factorization.

22424219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 26.

The square root of 22424219 is about 4735.4217341225. The cubic root of 22424219 is about 281.9935070517.

The spelling of 22424219 in words is "twenty-two million, four hundred twenty-four thousand, two hundred nineteen".