11101011011081 has 2 divisors, whose sum is σ = 11101011011082. Its totient is φ = 11101011011080.

The previous prime is 11101011011071. The next prime is 11101011011119. The reversal of 11101011011081 is 18011011010111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9374717217856 + 1726293793225 = 3061816^2 + 1313885^2 .

It is a cyclic number.

It is not a de Polignac number, because 11101011011081 - 2³⁴ = 11083831141897 is a prime.

It is a super-3 number, since 3×11101011011081³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (11101011011021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550505505540 + 5550505505541.

It is an arithmetic number, because the mean of its divisors is an integer number (5550505505541).

Almost surely, 2^{11101011011081} is an apocalyptic number.

It is an amenable number.

11101011011081 is a deficient number, since it is larger than the sum of its proper divisors (1).

11101011011081 is an equidigital number, since it uses as much as digits as its factorization.

11101011011081 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 17.

Adding to 11101011011081 its reverse (18011011010111), we get a palindrome (29112022021192).

The spelling of 11101011011081 in words is "eleven trillion, one hundred one billion, eleven million, eleven thousand, eighty-one".