11111101011 has 12 divisors (see below), whose sum is σ = 16097859960. Its totient is φ = 7385019840.

The previous prime is 11111100997. The next prime is 11111101019. The reversal of 11111101011 is 11010111111.

11111101011 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11111101011 - 2⁶ = 11111100947 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 11111100984 and 11111101002.

It is not an unprimeable number, because it can be changed into a prime (11111101019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1861926 + ... + 1867883.

It is an arithmetic number, because the mean of its divisors is an integer number (1341488330).

Almost surely, 2^11111101011 is an apocalyptic number.

11111101011 is a deficient number, since it is larger than the sum of its proper divisors (4986758949).

11111101011 is a wasteful number, since it uses less digits than its factorization.

11111101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3730146 (or 3730143 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 9.

Adding to 11111101011 its reverse (11010111111), we get a palindrome (22121212122).

It can be divided in two parts, 1111 and 1101011, that multiplied together give a palindrome (1223223221).

The spelling of 11111101011 in words is "eleven billion, one hundred eleven million, one hundred one thousand, eleven".