11111200111111 has 2 divisors, whose sum is σ = 11111200111112. Its totient is φ = 11111200111110.

The previous prime is 11111200111091. The next prime is 11111200111127. The reversal of 11111200111111 is 11111100211111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11111200111111 - 2⁵ = 11111200111079 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11111200111091 and 11111200111100.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11111200111181) 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, 5555600055555 + 5555600055556.

It is an arithmetic number, because the mean of its divisors is an integer number (5555600055556).

Almost surely, 2^{11111200111111} is an apocalyptic number.

11111200111111 is a deficient number, since it is larger than the sum of its proper divisors (1).

11111200111111 is an equidigital number, since it uses as much as digits as its factorization.

11111200111111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2, while the sum is 13.

Adding to 11111200111111 its reverse (11111100211111), we get a palindrome (22222300322222).

The spelling of 11111200111111 in words is "eleven trillion, one hundred eleven billion, two hundred million, one hundred eleven thousand, one hundred eleven".