221104144 has 20 divisors (see below), whose sum is σ = 438839100. Its totient is φ = 107855360.

The previous prime is 221104133. The next prime is 221104171. The reversal of 221104144 is 441401122.

It can be written as a sum of positive squares in 2 ways, for example, as 36144144 + 184960000 = 6012^2 + 13600^2 .

It is an unprimeable number.

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, 167869 + ... + 169180.

It is an arithmetic number, because the mean of its divisors is an integer number (21941955).

Almost surely, 2^221104144 is an apocalyptic number.

It is an amenable number.

221104144 is a deficient number, since it is larger than the sum of its proper divisors (217734956).

221104144 is a wasteful number, since it uses less digits than its factorization.

221104144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337098 (or 337092 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 221104144 is about 14869.5710765308. The cubic root of 221104144 is about 604.6893143329.

Adding to 221104144 its reverse (441401122), we get a palindrome (662505266).

The spelling of 221104144 in words is "two hundred twenty-one million, one hundred four thousand, one hundred forty-four".