221033044 has 6 divisors (see below), whose sum is σ = 386807834. Its totient is φ = 110516520.

The previous prime is 221032993. The next prime is 221033051. The reversal of 221033044 is 440330122.

It can be written as a sum of positive squares in only one way, i.e., 220819600 + 213444 = 14860^2 + 462^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 27629127 + ... + 27629134.

Almost surely, 2^221033044 is an apocalyptic number.

It is an amenable number.

221033044 is a deficient number, since it is larger than the sum of its proper divisors (165774790).

221033044 is a wasteful number, since it uses less digits than its factorization.

221033044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55258265 (or 55258263 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 221033044 is about 14867.1800957680. The cubic root of 221033044 is about 604.6244911554.

Adding to 221033044 its reverse (440330122), we get a palindrome (661363166).

The spelling of 221033044 in words is "two hundred twenty-one million, thirty-three thousand, forty-four".