220984717171 has 4 divisors (see below), whose sum is σ = 225686519712. Its totient is φ = 216282914632.

The previous prime is 220984717159. The next prime is 220984717181. The reversal of 220984717171 is 171717489022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 220984717171 - 2⁵ = 220984717139 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220984717181) 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, 2350901200 + ... + 2350901293.

It is an arithmetic number, because the mean of its divisors is an integer number (56421629928).

Almost surely, 2^220984717171 is an apocalyptic number.

220984717171 is a deficient number, since it is larger than the sum of its proper divisors (4701802541).

220984717171 is an equidigital number, since it uses as much as digits as its factorization.

220984717171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4701802540.

The product of its (nonzero) digits is 395136, while the sum is 49.

The spelling of 220984717171 in words is "two hundred twenty billion, nine hundred eighty-four million, seven hundred seventeen thousand, one hundred seventy-one".