22224641 has 4 divisors (see below), whose sum is σ = 22234884. Its totient is φ = 22214400.

The previous prime is 22224617. The next prime is 22224667. The reversal of 22224641 is 14642222.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 172225 + 22052416 = 415^2 + 4696^2 .

It is a cyclic number.

It is not a de Polignac number, because 22224641 - 2⁶ = 22224577 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22224611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 440 + ... + 6681.

It is an arithmetic number, because the mean of its divisors is an integer number (5558721).

Almost surely, 2^22224641 is an apocalyptic number.

It is an amenable number.

22224641 is a deficient number, since it is larger than the sum of its proper divisors (10243).

22224641 is an equidigital number, since it uses as much as digits as its factorization.

22224641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10242.

The product of its digits is 1536, while the sum is 23.

The square root of 22224641 is about 4714.3017510550. The cubic root of 22224641 is about 281.1544217781.

Adding to 22224641 its reverse (14642222), we get a palindrome (36866863).

The spelling of 22224641 in words is "twenty-two million, two hundred twenty-four thousand, six hundred forty-one".