216146171 has 2 divisors, whose sum is σ = 216146172. Its totient is φ = 216146170.

The previous prime is 216146159. The next prime is 216146173. The reversal of 216146171 is 171641612.

216146171 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216146171 - 2⁶ = 216146107 is a prime.

It is a super-2 number, since 2×216146171² = 93438334475922482, which contains 22 as substring.

Together with 216146173, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (216146173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108073085 + 108073086.

It is an arithmetic number, because the mean of its divisors is an integer number (108073086).

Almost surely, 2^216146171 is an apocalyptic number.

216146171 is a deficient number, since it is larger than the sum of its proper divisors (1).

216146171 is an equidigital number, since it uses as much as digits as its factorization.

216146171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 29.

The square root of 216146171 is about 14701.9104540873. The cubic root of 216146171 is about 600.1353130002.

Adding to 216146171 its reverse (171641612), we get a palindrome (387787783).

The spelling of 216146171 in words is "two hundred sixteen million, one hundred forty-six thousand, one hundred seventy-one".