171121115 has 16 divisors (see below), whose sum is σ = 230070240. Its totient is φ = 121086720.

The previous prime is 171121079. The next prime is 171121129. The reversal of 171121115 is 511121171.

It is not a de Polignac number, because 171121115 - 2¹⁶ = 171055579 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40010 + ... + 44079.

It is an arithmetic number, because the mean of its divisors is an integer number (14379390).

Almost surely, 2^171121115 is an apocalyptic number.

171121115 is a deficient number, since it is larger than the sum of its proper divisors (58949125).

171121115 is a wasteful number, since it uses less digits than its factorization.

171121115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84142.

The product of its digits is 70, while the sum is 20.

The square root of 171121115 is about 13081.3269586843. The cubic root of 171121115 is about 555.1809219966.

Adding to 171121115 its reverse (511121171), we get a palindrome (682242286).

The spelling of 171121115 in words is "one hundred seventy-one million, one hundred twenty-one thousand, one hundred fifteen".