22100444 has 12 divisors (see below), whose sum is σ = 38955000. Its totient is φ = 10970448.

The previous prime is 22100443. The next prime is 22100453. The reversal of 22100444 is 44400122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22100443) 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, 19319 + ... + 20430.

It is an arithmetic number, because the mean of its divisors is an integer number (3246250).

Almost surely, 2^22100444 is an apocalyptic number.

It is an amenable number.

22100444 is a deficient number, since it is larger than the sum of its proper divisors (16854556).

22100444 is a wasteful number, since it uses less digits than its factorization.

22100444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39892 (or 39890 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 22100444 is about 4701.1109325350. The cubic root of 22100444 is about 280.6297221441.

Adding to 22100444 its reverse (44400122), we get a palindrome (66500566).

The spelling of 22100444 in words is "twenty-two million, one hundred thousand, four hundred forty-four".