22181441 has 8 divisors (see below), whose sum is σ = 22438080. Its totient is φ = 21926608.

The previous prime is 22181429. The next prime is 22181443. The reversal of 22181441 is 14418122.

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 22181441 - 2⁶ = 22181377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22181443) 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 7 ways as a sum of consecutive naturals, for example, 52730 + ... + 53148.

It is an arithmetic number, because the mean of its divisors is an integer number (2804760).

Almost surely, 2^22181441 is an apocalyptic number.

It is an amenable number.

22181441 is a deficient number, since it is larger than the sum of its proper divisors (256639).

22181441 is a wasteful number, since it uses less digits than its factorization.

22181441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 903.

The product of its digits is 512, while the sum is 23.

The square root of 22181441 is about 4709.7177197790. The cubic root of 22181441 is about 280.9721353811.

Adding to 22181441 its reverse (14418122), we get a palindrome (36599563).

It can be divided in two parts, 22181 and 441, that added together give a palindrome (22622).

The spelling of 22181441 in words is "twenty-two million, one hundred eighty-one thousand, four hundred forty-one".