22144841 has 2 divisors, whose sum is σ = 22144842. Its totient is φ = 22144840.

The previous prime is 22144813. The next prime is 22144847. The reversal of 22144841 is 14844122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15405625 + 6739216 = 3925^2 + 2596^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22144841 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22144841.

It is not a weakly prime, because it can be changed into another prime (22144847) 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 as a sum of consecutive naturals, namely, 11072420 + 11072421.

It is an arithmetic number, because the mean of its divisors is an integer number (11072421).

Almost surely, 2^22144841 is an apocalyptic number.

It is an amenable number.

22144841 is a deficient number, since it is larger than the sum of its proper divisors (1).

22144841 is an equidigital number, since it uses as much as digits as its factorization.

22144841 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2048, while the sum is 26.

The square root of 22144841 is about 4705.8305324353. The cubic root of 22144841 is about 280.8175130039.

Adding to 22144841 its reverse (14844122), we get a palindrome (36988963).

The spelling of 22144841 in words is "twenty-two million, one hundred forty-four thousand, eight hundred forty-one".