22211144 has 16 divisors (see below), whose sum is σ = 41698800. Its totient is φ = 11091472.

The previous prime is 22211141. The next prime is 22211153. The reversal of 22211144 is 44111222.

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (22211141) 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, 8327 + ... + 10665.

It is an arithmetic number, because the mean of its divisors is an integer number (2606175).

Almost surely, 2^22211144 is an apocalyptic number.

It is an amenable number.

22211144 is a deficient number, since it is larger than the sum of its proper divisors (19487656).

22211144 is a wasteful number, since it uses less digits than its factorization.

22211144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3532 (or 3528 counting only the distinct ones).

The product of its digits is 128, while the sum is 17.

The square root of 22211144 is about 4712.8700385222. The cubic root of 22211144 is about 281.0974953292.

Adding to 22211144 its reverse (44111222), we get a palindrome (66322366).

The spelling of 22211144 in words is "twenty-two million, two hundred eleven thousand, one hundred forty-four".