22261223 has 4 divisors (see below), whose sum is σ = 22431288. Its totient is φ = 22091160.

The previous prime is 22261207. The next prime is 22261247. The reversal of 22261223 is 32216222.

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 22261223 - 2⁴ = 22261207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22261195 and 22261204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22261273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84836 + ... + 85097.

It is an arithmetic number, because the mean of its divisors is an integer number (5607822).

Almost surely, 2^22261223 is an apocalyptic number.

22261223 is a deficient number, since it is larger than the sum of its proper divisors (170065).

22261223 is a wasteful number, since it uses less digits than its factorization.

22261223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170064.

The product of its digits is 576, while the sum is 20.

The square root of 22261223 is about 4718.1800516725. The cubic root of 22261223 is about 281.3085982923.

Adding to 22261223 its reverse (32216222), we get a palindrome (54477445).

The spelling of 22261223 in words is "twenty-two million, two hundred sixty-one thousand, two hundred twenty-three".