11001010081 has 2 divisors, whose sum is σ = 11001010082. Its totient is φ = 11001010080.

The previous prime is 11001010057. The next prime is 11001010087. The reversal of 11001010081 is 18001010011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9798030225 + 1202979856 = 98985^2 + 34684^2 .

It is a cyclic number.

It is not a de Polignac number, because 11001010081 - 2⁷ = 11001009953 is a prime.

It is a super-2 number, since 2×11001010081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11001010087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5500505040 + 5500505041.

It is an arithmetic number, because the mean of its divisors is an integer number (5500505041).

Almost surely, 2^11001010081 is an apocalyptic number.

It is an amenable number.

11001010081 is a deficient number, since it is larger than the sum of its proper divisors (1).

11001010081 is an equidigital number, since it uses as much as digits as its factorization.

11001010081 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 13.

Adding to 11001010081 its reverse (18001010011), we get a palindrome (29002020092).

The spelling of 11001010081 in words is "eleven billion, one million, ten thousand, eighty-one".