11101010109881 has 2 divisors, whose sum is σ = 11101010109882. Its totient is φ = 11101010109880.

The previous prime is 11101010109869. The next prime is 11101010109901. The reversal of 11101010109881 is 18890101010111.

11101010109881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9541358810281 + 1559651299600 = 3088909^2 + 1248860^2 .

It is a cyclic number.

It is not a de Polignac number, because 11101010109881 - 2¹⁰ = 11101010108857 is a prime.

It is a super-2 number, since 2×11101010109881² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11101010109841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5550505054940 + 5550505054941.

It is an arithmetic number, because the mean of its divisors is an integer number (5550505054941).

Almost surely, 2^{11101010109881} is an apocalyptic number.

It is an amenable number.

11101010109881 is a deficient number, since it is larger than the sum of its proper divisors (1).

11101010109881 is an equidigital number, since it uses as much as digits as its factorization.

11101010109881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 32.

Adding to 11101010109881 its reverse (18890101010111), we get a palindrome (29991111119992).

The spelling of 11101010109881 in words is "eleven trillion, one hundred one billion, ten million, one hundred nine thousand, eight hundred eighty-one".