22271243 has 4 divisors (see below), whose sum is σ = 22302120. Its totient is φ = 22240368.

The previous prime is 22271239. The next prime is 22271273. The reversal of 22271243 is 34217222.

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 22271243 - 2² = 22271239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22271213) 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, 14330 + ... + 15807.

It is an arithmetic number, because the mean of its divisors is an integer number (5575530).

Almost surely, 2^22271243 is an apocalyptic number.

22271243 is a deficient number, since it is larger than the sum of its proper divisors (30877).

22271243 is an equidigital number, since it uses as much as digits as its factorization.

22271243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30876.

The product of its digits is 1344, while the sum is 23.

The square root of 22271243 is about 4719.2417823205. The cubic root of 22271243 is about 281.3507985696.

Adding to 22271243 its reverse (34217222), we get a palindrome (56488465).

The spelling of 22271243 in words is "twenty-two million, two hundred seventy-one thousand, two hundred forty-three".