221993068 has 12 divisors (see below), whose sum is σ = 423805032. Its totient is φ = 100905920.

The previous prime is 221993027. The next prime is 221993069. The reversal of 221993068 is 860399122.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 221993068.

It is not an unprimeable number, because it can be changed into a prime (221993069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2522605 + ... + 2522692.

It is an arithmetic number, because the mean of its divisors is an integer number (35317086).

Almost surely, 2^221993068 is an apocalyptic number.

It is an amenable number.

221993068 is a deficient number, since it is larger than the sum of its proper divisors (201811964).

221993068 is a wasteful number, since it uses less digits than its factorization.

221993068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5045312 (or 5045310 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 221993068 is about 14899.4318012467. The cubic root of 221993068 is about 605.4985922433.

The spelling of 221993068 in words is "two hundred twenty-one million, nine hundred ninety-three thousand, sixty-eight".