111112101211171 has 2 divisors, whose sum is σ = 111112101211172. Its totient is φ = 111112101211170.

The previous prime is 111112101211099. The next prime is 111112101211201. The reversal of 111112101211171 is 171112101211111.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111112101211171 is a prime.

It is not a weakly prime, because it can be changed into another prime (111112141211171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55556050605585 + 55556050605586.

It is an arithmetic number, because the mean of its divisors is an integer number (55556050605586).

Almost surely, 2^{111112101211171} is an apocalyptic number.

111112101211171 is a deficient number, since it is larger than the sum of its proper divisors (1).

111112101211171 is an equidigital number, since it uses as much as digits as its factorization.

111112101211171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28, while the sum is 22.

Adding to 111112101211171 its reverse (171112101211111), we get a palindrome (282224202422282).

The spelling of 111112101211171 in words is "one hundred eleven trillion, one hundred twelve billion, one hundred one million, two hundred eleven thousand, one hundred seventy-one".