11111101001071 has 2 divisors, whose sum is σ = 11111101001072. Its totient is φ = 11111101001070.

The previous prime is 11111101001069. The next prime is 11111101001107. The reversal of 11111101001071 is 17010010111111.

11111101001071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (11111101001107) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11111101001071 - 2¹ = 11111101001069 is a prime.

Together with 11111101001069, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11111101001471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555550500535 + 5555550500536.

It is an arithmetic number, because the mean of its divisors is an integer number (5555550500536).

Almost surely, 2^{11111101001071} is an apocalyptic number.

11111101001071 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111101001071 is an equidigital number, since it uses as much as digits as its factorization.

11111101001071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7, while the sum is 16.

Adding to 11111101001071 its reverse (17010010111111), we get a palindrome (28121111112182).

The spelling of 11111101001071 in words is "eleven trillion, one hundred eleven billion, one hundred one million, one thousand, seventy-one".