111100100171 has 2 divisors, whose sum is σ = 111100100172. Its totient is φ = 111100100170.

The previous prime is 111100100117. The next prime is 111100100179. The reversal of 111100100171 is 171001001111.

Together with previous prime (111100100117) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111100100171 is a prime.

It is not a weakly prime, because it can be changed into another prime (111100100179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55550050085 + 55550050086.

It is an arithmetic number, because the mean of its divisors is an integer number (55550050086).

Almost surely, 2^111100100171 is an apocalyptic number.

111100100171 is a deficient number, since it is larger than the sum of its proper divisors (1).

111100100171 is an equidigital number, since it uses as much as digits as its factorization.

111100100171 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 111100100171 its reverse (171001001111), we get a palindrome (282101101282).

The spelling of 111100100171 in words is "one hundred eleven billion, one hundred million, one hundred thousand, one hundred seventy-one".