221050066 has 8 divisors (see below), whose sum is σ = 349026480. Its totient is φ = 104707908.

The previous prime is 221050061. The next prime is 221050073. The reversal of 221050066 is 660050122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (221050061) 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, 2908516 + ... + 2908591.

It is an arithmetic number, because the mean of its divisors is an integer number (43628310).

Almost surely, 2^221050066 is an apocalyptic number.

221050066 is a deficient number, since it is larger than the sum of its proper divisors (127976414).

221050066 is a wasteful number, since it uses less digits than its factorization.

221050066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5817128.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 221050066 is about 14867.7525537655. The cubic root of 221050066 is about 604.6400116913.

The spelling of 221050066 in words is "two hundred twenty-one million, fifty thousand, sixty-six".