1811011100111 has 2 divisors, whose sum is σ = 1811011100112. Its totient is φ = 1811011100110.

The previous prime is 1811011100083. The next prime is 1811011100137. The reversal of 1811011100111 is 1110011101181.

It is a strong prime.

It is an emirp because it is prime and its reverse (1110011101181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1811011100111 - 2¹⁰ = 1811011099087 is a prime.

It is a super-2 number, since 2×1811011100111² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1811011100111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1811011100141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 905505550055 + 905505550056.

It is an arithmetic number, because the mean of its divisors is an integer number (905505550056).

Almost surely, 2^{1811011100111} is an apocalyptic number.

1811011100111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1811011100111 is an equidigital number, since it uses as much as digits as its factorization.

1811011100111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8, while the sum is 17.

Adding to 1811011100111 its reverse (1110011101181), we get a palindrome (2921022201292).

The spelling of 1811011100111 in words is "one trillion, eight hundred eleven billion, eleven million, one hundred thousand, one hundred eleven".