11111000111111 has 2 divisors, whose sum is σ = 11111000111112. Its totient is φ = 11111000111110.

The previous prime is 11111000111083. The next prime is 11111000111131. The reversal of 11111000111111 is 11111100011111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11111000111111 - 2⁶ = 11111000111047 is a prime.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 11111000111092 and 11111000111101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11111000111131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555500055555 + 5555500055556.

It is an arithmetic number, because the mean of its divisors is an integer number (5555500055556).

Almost surely, 2^{11111000111111} is an apocalyptic number.

11111000111111 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111000111111 is an equidigital number, since it uses as much as digits as its factorization.

11111000111111 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 11111000111111 its reverse (11111100011111), we get a palindrome (22222100122222).

The spelling of 11111000111111 in words is "eleven trillion, one hundred eleven billion, one hundred eleven thousand, one hundred eleven".