221044 has 12 divisors (see below), whose sum is σ = 392644. Its totient is φ = 108864.

The previous prime is 221021. The next prime is 221047. The reversal of 221044 is 440122.

221044 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 131044 + 90000 = 362^2 + 300^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87 + ... + 670.

2²²¹⁰⁴⁴ is an apocalyptic number.

It is an amenable number.

221044 is a deficient number, since it is larger than the sum of its proper divisors (171600).

221044 is a wasteful number, since it uses less digits than its factorization.

221044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 834 (or 832 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 221044 is about 470.1531665319. The cubic root of 221044 is about 60.4634480848.

Adding to 221044 its reverse (440122), we get a palindrome (661166).

The spelling of 221044 in words is "two hundred twenty-one thousand, forty-four", and thus it is an iban number.