171112001 has 2 divisors, whose sum is σ = 171112002. Its totient is φ = 171112000.

The previous prime is 171111991. The next prime is 171112003. The reversal of 171112001 is 100211171.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170433025 + 678976 = 13055^2 + 824^2 .

It is a cyclic number.

It is not a de Polignac number, because 171112001 - 2⁶ = 171111937 is a prime.

Together with 171112003, 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 (171112003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85556000 + 85556001.

It is an arithmetic number, because the mean of its divisors is an integer number (85556001).

Almost surely, 2^171112001 is an apocalyptic number.

It is an amenable number.

171112001 is a deficient number, since it is larger than the sum of its proper divisors (1).

171112001 is an equidigital number, since it uses as much as digits as its factorization.

171112001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14, while the sum is 14.

The square root of 171112001 is about 13080.9785948911. The cubic root of 171112001 is about 555.1710654130.

Adding to 171112001 its reverse (100211171), we get a palindrome (271323172).

The spelling of 171112001 in words is "one hundred seventy-one million, one hundred twelve thousand, one".