22240223 has 2 divisors, whose sum is σ = 22240224. Its totient is φ = 22240222.

The previous prime is 22240201. The next prime is 22240247. The reversal of 22240223 is 32204222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22240223 - 2⁸ = 22239967 is a prime.

It is equal to p_1403351 and since 22240223 and 1403351 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 (22240123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11120111 + 11120112.

It is an arithmetic number, because the mean of its divisors is an integer number (11120112).

Almost surely, 2^22240223 is an apocalyptic number.

22240223 is a deficient number, since it is larger than the sum of its proper divisors (1).

22240223 is an equidigital number, since it uses as much as digits as its factorization.

22240223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 17.

The square root of 22240223 is about 4715.9540922278. The cubic root of 22240223 is about 281.2201134992.

Adding to 22240223 its reverse (32204222), we get a palindrome (54444445).

The spelling of 22240223 in words is "twenty-two million, two hundred forty thousand, two hundred twenty-three".