216017271 has 12 divisors (see below), whose sum is σ = 314942472. Its totient is φ = 142664976.

The previous prime is 216017257. The next prime is 216017273. The reversal of 216017271 is 172710612.

216017271 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 216017271 - 2¹⁴ = 216000887 is a prime.

It is a super-2 number, since 2×216017271² = 93326922740574882, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216017273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 111196 + ... + 113121.

It is an arithmetic number, because the mean of its divisors is an integer number (26245206).

Almost surely, 2^216017271 is an apocalyptic number.

216017271 is a deficient number, since it is larger than the sum of its proper divisors (98925201).

216017271 is a wasteful number, since it uses less digits than its factorization.

216017271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224430 (or 224427 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 27.

The square root of 216017271 is about 14697.5260163063. The cubic root of 216017271 is about 600.0159912405.

Adding to 216017271 its reverse (172710612), we get a palindrome (388727883).

The spelling of 216017271 in words is "two hundred sixteen million, seventeen thousand, two hundred seventy-one".