221414444 has 6 divisors (see below), whose sum is σ = 387475284. Its totient is φ = 110707220.

The previous prime is 221414441. The next prime is 221414483. The reversal of 221414444 is 444414122.

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

It is not an unprimeable number, because it can be changed into a prime (221414441) 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 as a sum of consecutive naturals, namely, 27676802 + ... + 27676809.

It is an arithmetic number, because the mean of its divisors is an integer number (64579214).

Almost surely, 2^221414444 is an apocalyptic number.

It is an amenable number.

221414444 is a deficient number, since it is larger than the sum of its proper divisors (166060840).

221414444 is a wasteful number, since it uses less digits than its factorization.

221414444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55353615 (or 55353613 counting only the distinct ones).

The product of its digits is 4096, while the sum is 26.

The square root of 221414444 is about 14880.0014784946. The cubic root of 221414444 is about 604.9720579951.

Adding to 221414444 its reverse (444414122), we get a palindrome (665828566).

The spelling of 221414444 in words is "two hundred twenty-one million, four hundred fourteen thousand, four hundred forty-four".