221867866968 has 64 divisors (see below), whose sum is σ = 605305854720. Its totient is φ = 67209168000.

The previous prime is 221867866937. The next prime is 221867866981. The reversal of 221867866968 is 869668768122.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 616618 + ... + 907718.

It is an arithmetic number, because the mean of its divisors is an integer number (9457903980).

Almost surely, 2^221867866968 is an apocalyptic number.

It is an amenable number.

221867866968 is an abundant number, since it is smaller than the sum of its proper divisors (383437987752).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

221867866968 is a wasteful number, since it uses less digits than its factorization.

221867866968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294008 (or 294004 counting only the distinct ones).

The product of its digits is 167215104, while the sum is 69.

The spelling of 221867866968 in words is "two hundred twenty-one billion, eight hundred sixty-seven million, eight hundred sixty-six thousand, nine hundred sixty-eight".