11011010081 has 2 divisors, whose sum is σ = 11011010082. Its totient is φ = 11011010080.

The previous prime is 11011010053. The next prime is 11011010083. The reversal of 11011010081 is 18001011011.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9475075600 + 1535934481 = 97340^2 + 39191^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11011010081 is a prime.

It is a super-2 number, since 2×11011010081² (a number of 21 digits) contains 22 as substring.

Together with 11011010083, 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 (11011010083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505505040 + 5505505041.

It is an arithmetic number, because the mean of its divisors is an integer number (5505505041).

Almost surely, 2^11011010081 is an apocalyptic number.

It is an amenable number.

11011010081 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011010081 is an equidigital number, since it uses as much as digits as its factorization.

11011010081 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 14.

Adding to 11011010081 its reverse (18001011011), we get a palindrome (29012021092).

The spelling of 11011010081 in words is "eleven billion, eleven million, ten thousand, eighty-one".