11011111101011 has 4 divisors (see below), whose sum is σ = 12584126972592. Its totient is φ = 9438095229432.

The previous prime is 11011111100987. The next prime is 11011111101013. The reversal of 11011111101011 is 11010111111011.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11011111101011 - 2³⁸ = 10736233194067 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11011111100983 and 11011111101001.

It is not an unprimeable number, because it can be changed into a prime (11011111101013) 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, 786507935780 + ... + 786507935793.

It is an arithmetic number, because the mean of its divisors is an integer number (3146031743148).

Almost surely, 2^{11011111101011} is an apocalyptic number.

11011111101011 is a deficient number, since it is larger than the sum of its proper divisors (1573015871581).

11011111101011 is an equidigital number, since it uses as much as digits as its factorization.

11011111101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573015871580.

The product of its (nonzero) digits is 1, while the sum is 11.

Adding to 11011111101011 its reverse (11010111111011), we get a palindrome (22021222212022).

The spelling of 11011111101011 in words is "eleven trillion, eleven billion, one hundred eleven million, one hundred one thousand, eleven".