201105287171 has 2 divisors, whose sum is σ = 201105287172. Its totient is φ = 201105287170.

The previous prime is 201105287167. The next prime is 201105287189. The reversal of 201105287171 is 171782501102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201105287171 - 2² = 201105287167 is a prime.

It is not a weakly prime, because it can be changed into another prime (201105217171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100552643585 + 100552643586.

It is an arithmetic number, because the mean of its divisors is an integer number (100552643586).

Almost surely, 2^201105287171 is an apocalyptic number.

201105287171 is a deficient number, since it is larger than the sum of its proper divisors (1).

201105287171 is an equidigital number, since it uses as much as digits as its factorization.

201105287171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7840, while the sum is 35.

Adding to 201105287171 its reverse (171782501102), we get a palindrome (372887788273).

The spelling of 201105287171 in words is "two hundred one billion, one hundred five million, two hundred eighty-seven thousand, one hundred seventy-one".