111411221171 has 2 divisors, whose sum is σ = 111411221172. Its totient is φ = 111411221170.

The previous prime is 111411221167. The next prime is 111411221183. The reversal of 111411221171 is 171122114111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111411221171 - 2² = 111411221167 is a prime.

It is a super-3 number, since 3×111411221171³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (111411221371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55705610585 + 55705610586.

It is an arithmetic number, because the mean of its divisors is an integer number (55705610586).

Almost surely, 2^111411221171 is an apocalyptic number.

111411221171 is a deficient number, since it is larger than the sum of its proper divisors (1).

111411221171 is an equidigital number, since it uses as much as digits as its factorization.

111411221171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112, while the sum is 23.

Adding to 111411221171 its reverse (171122114111), we get a palindrome (282533335282).

The spelling of 111411221171 in words is "one hundred eleven billion, four hundred eleven million, two hundred twenty-one thousand, one hundred seventy-one".