221348800648 has 32 divisors (see below), whose sum is σ = 415870200000. Its totient is φ = 110450217280.

The previous prime is 221348800639. The next prime is 221348800819. The reversal of 221348800648 is 846008843122.

It is a junction number, because it is equal to n+sod(n) for n = 221348800598 and 221348800607.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17153703 + ... + 17166601.

It is an arithmetic number, because the mean of its divisors is an integer number (12995943750).

Almost surely, 2^221348800648 is an apocalyptic number.

It is an amenable number.

221348800648 is a deficient number, since it is larger than the sum of its proper divisors (194521399352).

221348800648 is a wasteful number, since it uses less digits than its factorization.

221348800648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17085 (or 17081 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 46.

The spelling of 221348800648 in words is "two hundred twenty-one billion, three hundred forty-eight million, eight hundred thousand, six hundred forty-eight".