221443888672 has 48 divisors (see below), whose sum is σ = 437100300000. Its totient is φ = 110434567680.

The previous prime is 221443888621. The next prime is 221443888739. The reversal of 221443888672 is 276888344122.

It is a happy number.

221443888672 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37857204 + ... + 37863052.

It is an arithmetic number, because the mean of its divisors is an integer number (9106256250).

Almost surely, 2^221443888672 is an apocalyptic number.

It is an amenable number.

221443888672 is a deficient number, since it is larger than the sum of its proper divisors (215656411328).

221443888672 is a wasteful number, since it uses less digits than its factorization.

221443888672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8729 (or 8721 counting only the distinct ones).

The product of its digits is 8257536, while the sum is 55.

The spelling of 221443888672 in words is "two hundred twenty-one billion, four hundred forty-three million, eight hundred eighty-eight thousand, six hundred seventy-two".