11011100121011 has 4 divisors (see below), whose sum is σ = 11011108982400. Its totient is φ = 11011091259624.

The previous prime is 11011100121001. The next prime is 11011100121143. The reversal of 11011100121011 is 11012100111011.

It is a happy number.

11011100121011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11011100121011 - 2³⁴ = 10993920251827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11011100120983 and 11011100121001.

It is not an unprimeable number, because it can be changed into a prime (11011100121001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2188616 + ... + 5178053.

It is an arithmetic number, because the mean of its divisors is an integer number (2752777245600).

Almost surely, 2^{11011100121011} is an apocalyptic number.

11011100121011 is a deficient number, since it is larger than the sum of its proper divisors (8861389).

11011100121011 is an equidigital number, since it uses as much as digits as its factorization.

11011100121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8861388.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 11011100121011 its reverse (11012100111011), we get a palindrome (22023200232022).

The spelling of 11011100121011 in words is "eleven trillion, eleven billion, one hundred million, one hundred twenty-one thousand, eleven".