22122223 has 2 divisors, whose sum is σ = 22122224. Its totient is φ = 22122222.

The previous prime is 22122203. The next prime is 22122241. The reversal of 22122223 is 32222122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22122223 - 2¹³ = 22114031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22122197 and 22122206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22122203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11061111 + 11061112.

It is an arithmetic number, because the mean of its divisors is an integer number (11061112).

Almost surely, 2^22122223 is an apocalyptic number.

22122223 is a deficient number, since it is larger than the sum of its proper divisors (1).

22122223 is an equidigital number, since it uses as much as digits as its factorization.

22122223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 16.

The square root of 22122223 is about 4703.4267295239. The cubic root of 22122223 is about 280.7218745638.

Adding to 22122223 its reverse (32222122), we get a palindrome (54344345).

The spelling of 22122223 in words is "twenty-two million, one hundred twenty-two thousand, two hundred twenty-three".