11000081 has 2 divisors, whose sum is σ = 11000082. Its totient is φ = 11000080.

The previous prime is 11000057. The next prime is 11000083. The reversal of 11000081 is 18000011.

11000081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10995856 + 4225 = 3316^2 + 65^2 .

It is a cyclic number.

It is not a de Polignac number, because 11000081 - 2¹⁰ = 10999057 is a prime.

It is a super-2 number, since 2×11000081² = 242003564013122, which contains 22 as substring.

Together with 11000083, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11000083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500040 + 5500041.

It is an arithmetic number, because the mean of its divisors is an integer number (5500041).

Almost surely, 2^11000081 is an apocalyptic number.

It is an amenable number.

11000081 is a deficient number, since it is larger than the sum of its proper divisors (1).

11000081 is an equidigital number, since it uses as much as digits as its factorization.

11000081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 11000081 is about 3316.6370015424. The cubic root of 11000081 is about 222.3985549416.

Adding to 11000081 its reverse (18000011), we get a palindrome (29000092).

The spelling of 11000081 in words is "eleven million, eighty-one", and thus it is an aban number and an uban number.