111101402192171 has 2 divisors, whose sum is σ = 111101402192172. Its totient is φ = 111101402192170.

The previous prime is 111101402192161. The next prime is 111101402192173. The reversal of 111101402192171 is 171291204101111.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111101402192171 is a prime.

Together with 111101402192173, 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 (111101402192173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55550701096085 + 55550701096086.

It is an arithmetic number, because the mean of its divisors is an integer number (55550701096086).

Almost surely, 2^{111101402192171} is an apocalyptic number.

111101402192171 is a deficient number, since it is larger than the sum of its proper divisors (1).

111101402192171 is an equidigital number, since it uses as much as digits as its factorization.

111101402192171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 32.

Adding to 111101402192171 its reverse (171291204101111), we get a palindrome (282392606293282).

The spelling of 111101402192171 in words is "one hundred eleven trillion, one hundred one billion, four hundred two million, one hundred ninety-two thousand, one hundred seventy-one".