11111111100071 has 2 divisors, whose sum is σ = 11111111100072. Its totient is φ = 11111111100070.

The previous prime is 11111111099989. The next prime is 11111111100163. The reversal of 11111111100071 is 17000111111111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11111111100071 - 2²⁶ = 11111043991207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11111111100671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555555550035 + 5555555550036.

It is an arithmetic number, because the mean of its divisors is an integer number (5555555550036).

Almost surely, 2^{11111111100071} is an apocalyptic number.

11111111100071 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111111100071 is an equidigital number, since it uses as much as digits as its factorization.

11111111100071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7, while the sum is 17.

Adding to 11111111100071 its reverse (17000111111111), we get a palindrome (28111222211182).

The spelling of 11111111100071 in words is "eleven trillion, one hundred eleven billion, one hundred eleven million, one hundred thousand, seventy-one".