221044052 has 6 divisors (see below), whose sum is σ = 386827098. Its totient is φ = 110522024.

The previous prime is 221044051. The next prime is 221044069. The reversal of 221044052 is 250440122.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 210714256 + 10329796 = 14516^2 + 3214^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221044051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27630503 + ... + 27630510.

It is an arithmetic number, because the mean of its divisors is an integer number (64471183).

Almost surely, 2^221044052 is an apocalyptic number.

It is an amenable number.

221044052 is a deficient number, since it is larger than the sum of its proper divisors (165783046).

221044052 is a wasteful number, since it uses less digits than its factorization.

221044052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55261017 (or 55261015 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 221044052 is about 14867.5503025885. The cubic root of 221044052 is about 604.6345282608.

Adding to 221044052 its reverse (250440122), we get a palindrome (471484174).

The spelling of 221044052 in words is "two hundred twenty-one million, forty-four thousand, fifty-two".