221445043504 has 40 divisors (see below), whose sum is σ = 437199450480. Its totient is φ = 108619899648.

The previous prime is 221445043489. The next prime is 221445043513. The reversal of 221445043504 is 405340544122.

221445043504 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 221445043504.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12335367 + ... + 12353305.

It is an arithmetic number, because the mean of its divisors is an integer number (10929986262).

Almost surely, 2^221445043504 is an apocalyptic number.

It is an amenable number.

221445043504 is a deficient number, since it is larger than the sum of its proper divisors (215754406976).

221445043504 is a wasteful number, since it uses less digits than its factorization.

221445043504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32557 (or 32551 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 34.

Adding to 221445043504 its reverse (405340544122), we get a palindrome (626785587626).

The spelling of 221445043504 in words is "two hundred twenty-one billion, four hundred forty-five million, forty-three thousand, five hundred four".