1100001811 has 2 divisors, whose sum is σ = 1100001812. Its totient is φ = 1100001810.

The previous prime is 1100001809. The next prime is 1100001863. The reversal of 1100001811 is 1181000011.

It is a weak prime.

It is an emirp because it is prime and its reverse (1181000011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1100001811 - 2¹ = 1100001809 is a prime.

Together with 1100001809, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1100001791 and 1100001800.

It is not a weakly prime, because it can be changed into another prime (1100001211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550000905 + 550000906.

It is an arithmetic number, because the mean of its divisors is an integer number (550000906).

Almost surely, 2^1100001811 is an apocalyptic number.

1100001811 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100001811 is an equidigital number, since it uses as much as digits as its factorization.

1100001811 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 13.

The square root of 1100001811 is about 33166.2752053950. The cubic root of 1100001811 is about 1032.2806819589.

Adding to 1100001811 its reverse (1181000011), we get a palindrome (2281001822).

The spelling of 1100001811 in words is "one billion, one hundred million, one thousand, eight hundred eleven".