221341868 has 24 divisors (see below), whose sum is σ = 444803520. Its totient is φ = 95314320.

The previous prime is 221341837. The next prime is 221341873. The reversal of 221341868 is 868143122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131546 + ... + 133217.

It is an arithmetic number, because the mean of its divisors is an integer number (18533480).

Almost surely, 2^221341868 is an apocalyptic number.

It is an amenable number.

221341868 is an abundant number, since it is smaller than the sum of its proper divisors (223461652).

221341868 is a wasteful number, since it uses less digits than its factorization.

221341868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264797 (or 264795 counting only the distinct ones).

The product of its digits is 18432, while the sum is 35.

The square root of 221341868 is about 14877.5625691845. The cubic root of 221341868 is about 604.9059508200.

The spelling of 221341868 in words is "two hundred twenty-one million, three hundred forty-one thousand, eight hundred sixty-eight".