1000111100171 has 2 divisors, whose sum is σ = 1000111100172. Its totient is φ = 1000111100170.

The previous prime is 1000111100057. The next prime is 1000111100179. The reversal of 1000111100171 is 1710011110001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1000111100171 - 2²² = 1000106905867 is a prime.

It is not a weakly prime, because it can be changed into another prime (1000111100179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500055550085 + 500055550086.

It is an arithmetic number, because the mean of its divisors is an integer number (500055550086).

Almost surely, 2^{1000111100171} is an apocalyptic number.

1000111100171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000111100171 is an equidigital number, since it uses as much as digits as its factorization.

1000111100171 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7, while the sum is 14.

Adding to 1000111100171 its reverse (1710011110001), we get a palindrome (2710122210172).

The spelling of 1000111100171 in words is "one trillion, one hundred eleven million, one hundred thousand, one hundred seventy-one".