111240204431171 has 2 divisors, whose sum is σ = 111240204431172. Its totient is φ = 111240204431170.

The previous prime is 111240204431131. The next prime is 111240204431183. The reversal of 111240204431171 is 171134402042111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 111240204431171 - 2¹⁸ = 111240204169027 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (111240204431131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55620102215585 + 55620102215586.

It is an arithmetic number, because the mean of its divisors is an integer number (55620102215586).

Almost surely, 2^{111240204431171} is an apocalyptic number.

111240204431171 is a deficient number, since it is larger than the sum of its proper divisors (1).

111240204431171 is an equidigital number, since it uses as much as digits as its factorization.

111240204431171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 32.

Adding to 111240204431171 its reverse (171134402042111), we get a palindrome (282374606473282).

The spelling of 111240204431171 in words is "one hundred eleven trillion, two hundred forty billion, two hundred four million, four hundred thirty-one thousand, one hundred seventy-one".