1171282171 has 2 divisors, whose sum is σ = 1171282172. Its totient is φ = 1171282170.

The previous prime is 1171282169. The next prime is 1171282183. The reversal of 1171282171 is 1712821711.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1171282171 - 2¹ = 1171282169 is a prime.

Together with 1171282169, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1171282111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 585641085 + 585641086.

It is an arithmetic number, because the mean of its divisors is an integer number (585641086).

Almost surely, 2^1171282171 is an apocalyptic number.

1171282171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1171282171 is an equidigital number, since it uses as much as digits as its factorization.

1171282171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1568, while the sum is 31.

The square root of 1171282171 is about 34223.9999269518. Note that the first 4 decimals coincide. The cubic root of 1171282171 is about 1054.1130198289.

The spelling of 1171282171 in words is "one billion, one hundred seventy-one million, two hundred eighty-two thousand, one hundred seventy-one".