22140223 has 4 divisors (see below), whose sum is σ = 25303120. Its totient is φ = 18977328.

The previous prime is 22140221. The next prime is 22140233. The reversal of 22140223 is 32204122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32204122 = 2 ⋅16102061.

It is a cyclic number.

It is not a de Polignac number, because 22140223 - 2¹ = 22140221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22140197 and 22140206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22140221) 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, 1581438 + ... + 1581451.

It is an arithmetic number, because the mean of its divisors is an integer number (6325780).

Almost surely, 2^22140223 is an apocalyptic number.

22140223 is a deficient number, since it is larger than the sum of its proper divisors (3162897).

22140223 is an equidigital number, since it uses as much as digits as its factorization.

22140223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3162896.

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

The square root of 22140223 is about 4705.3398389489. The cubic root of 22140223 is about 280.7979914454.

Adding to 22140223 its reverse (32204122), we get a palindrome (54344345).

The spelling of 22140223 in words is "twenty-two million, one hundred forty thousand, two hundred twenty-three".