201171115 has 16 divisors (see below), whose sum is σ = 264422880. Its totient is φ = 146245120.

The previous prime is 201171101. The next prime is 201171143. The reversal of 201171115 is 511171102.

It is not a de Polignac number, because 201171115 - 2⁵ = 201171083 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201171092 and 201171101.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38341 + ... + 43270.

It is an arithmetic number, because the mean of its divisors is an integer number (16526430).

Almost surely, 2^201171115 is an apocalyptic number.

201171115 is a deficient number, since it is larger than the sum of its proper divisors (63251765).

201171115 is a wasteful number, since it uses less digits than its factorization.

201171115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81662.

The product of its (nonzero) digits is 70, while the sum is 19.

The square root of 201171115 is about 14183.4803556814. The cubic root of 201171115 is about 585.9427805841.

The spelling of 201171115 in words is "two hundred one million, one hundred seventy-one thousand, one hundred fifteen".