11111101010111 has 2 divisors, whose sum is σ = 11111101010112. Its totient is φ = 11111101010110.

The previous prime is 11111101010081. The next prime is 11111101010123. The reversal of 11111101010111 is 11101010111111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11111101010111 - 2¹⁰ = 11111101009087 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11111101010092 and 11111101010101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11111101510111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555550505055 + 5555550505056.

It is an arithmetic number, because the mean of its divisors is an integer number (5555550505056).

Almost surely, 2^{11111101010111} is an apocalyptic number.

11111101010111 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111101010111 is an equidigital number, since it uses as much as digits as its factorization.

11111101010111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1, while the sum is 11.

Adding to 11111101010111 its reverse (11101010111111), we get a palindrome (22212111121222).

It can be divided in two parts, 111 and 11101010111, that multiplied together give a palindrome (1232212122321).

The spelling of 11111101010111 in words is "eleven trillion, one hundred eleven billion, one hundred one million, ten thousand, one hundred eleven".