22144223 has 8 divisors (see below), whose sum is σ = 22779456. Its totient is φ = 21513600.

The previous prime is 22144219. The next prime is 22144247. The reversal of 22144223 is 32244122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22144223 - 2² = 22144219 is a prime.

It is a super-2 number, since 2×22144223² = 980733224547458, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22144195 and 22144204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22144273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10115 + ... + 12107.

It is an arithmetic number, because the mean of its divisors is an integer number (2847432).

Almost surely, 2^22144223 is an apocalyptic number.

22144223 is a deficient number, since it is larger than the sum of its proper divisors (635233).

22144223 is a wasteful number, since it uses less digits than its factorization.

22144223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2305.

The product of its digits is 768, while the sum is 20.

The square root of 22144223 is about 4705.7648687541. The cubic root of 22144223 is about 280.8149007049.

Adding to 22144223 its reverse (32244122), we get a palindrome (54388345).

It can be divided in two parts, 221 and 44223, that added together give a palindrome (44444).

The spelling of 22144223 in words is "twenty-two million, one hundred forty-four thousand, two hundred twenty-three".