111161125171 has 2 divisors, whose sum is σ = 111161125172. Its totient is φ = 111161125170.

The previous prime is 111161125111. The next prime is 111161125193. The reversal of 111161125171 is 171521161111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111161125171 - 2¹⁵ = 111161092403 is a prime.

It is a super-3 number, since 3×111161125171³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (111161125111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55580562585 + 55580562586.

It is an arithmetic number, because the mean of its divisors is an integer number (55580562586).

Almost surely, 2^111161125171 is an apocalyptic number.

111161125171 is a deficient number, since it is larger than the sum of its proper divisors (1).

111161125171 is an equidigital number, since it uses as much as digits as its factorization.

111161125171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 420, while the sum is 28.

Adding to 111161125171 its reverse (171521161111), we get a palindrome (282682286282).

The spelling of 111161125171 in words is "one hundred eleven billion, one hundred sixty-one million, one hundred twenty-five thousand, one hundred seventy-one".