22422223 has 4 divisors (see below), whose sum is σ = 23602360. Its totient is φ = 21242088.

The previous prime is 22422199. The next prime is 22422227. The reversal of 22422223 is 32222422.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22422223 - 2¹⁷ = 22291151 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19), and also a Moran number because the ratio is a prime number: 1180117 = 22422223 / (2 + 2 + 4 + 2 + 2 + 2 + 2 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22422223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22422227) 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 in 3 ways as a sum of consecutive naturals, for example, 590040 + ... + 590077.

It is an arithmetic number, because the mean of its divisors is an integer number (5900590).

Almost surely, 2^22422223 is an apocalyptic number.

22422223 is a deficient number, since it is larger than the sum of its proper divisors (1180137).

22422223 is a wasteful number, since it uses less digits than its factorization.

22422223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1180136.

The product of its digits is 768, while the sum is 19.

The square root of 22422223 is about 4735.2109773483. The cubic root of 22422223 is about 281.9851399711.

Adding to 22422223 its reverse (32222422), we get a palindrome (54644645).

It can be divided in two parts, 2242 and 2223, that added together give a triangular number (4465 = T₉₄).

The spelling of 22422223 in words is "twenty-two million, four hundred twenty-two thousand, two hundred twenty-three".