11011001101081 has 2 divisors, whose sum is σ = 11011001101082. Its totient is φ = 11011001101080.

The previous prime is 11011001101073. The next prime is 11011001101099. The reversal of 11011001101081 is 18010110011011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6992243161225 + 4018757939856 = 2644285^2 + 2004684^2 .

It is an emirp because it is prime and its reverse (18010110011011) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11011001101081 - 2³ = 11011001101073 is a prime.

It is a super-2 number, since 2×11011001101081² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11011001801081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5505500550540 + 5505500550541.

It is an arithmetic number, because the mean of its divisors is an integer number (5505500550541).

Almost surely, 2^{11011001101081} is an apocalyptic number.

It is an amenable number.

11011001101081 is a deficient number, since it is larger than the sum of its proper divisors (1).

11011001101081 is an equidigital number, since it uses as much as digits as its factorization.

11011001101081 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 16.

Adding to 11011001101081 its reverse (18010110011011), we get a palindrome (29021111112092).

The spelling of 11011001101081 in words is "eleven trillion, eleven billion, one million, one hundred one thousand, eighty-one".