220115171 has 4 divisors (see below), whose sum is σ = 231700200. Its totient is φ = 208530144.

The previous prime is 220115141. The next prime is 220115177. The reversal of 220115171 is 171511022.

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 220115171 - 2⁶ = 220115107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220115177) 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, 5792486 + ... + 5792523.

It is an arithmetic number, because the mean of its divisors is an integer number (57925050).

Almost surely, 2^220115171 is an apocalyptic number.

220115171 is a deficient number, since it is larger than the sum of its proper divisors (11585029).

220115171 is a wasteful number, since it uses less digits than its factorization.

220115171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11585028.

The product of its (nonzero) digits is 140, while the sum is 20.

The square root of 220115171 is about 14836.2788798270. The cubic root of 220115171 is about 603.7863985646.

Adding to 220115171 its reverse (171511022), we get a palindrome (391626193).

The spelling of 220115171 in words is "two hundred twenty million, one hundred fifteen thousand, one hundred seventy-one".