11111100100011 has 96 divisors (see below), whose sum is σ = 17370955929600. Its totient is φ = 6829371843840.

The previous prime is 11111100099943. The next prime is 11111100100019. The reversal of 11111100100011 is 11000100111111.

It is not a de Polignac number, because 11111100100011 - 2¹⁷ = 11111099968939 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 = 11111100099966 and 11111100100002.

It is not an unprimeable number, because it can be changed into a prime (11111100100019) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 127361196 + ... + 127448406.

It is an arithmetic number, because the mean of its divisors is an integer number (180947457600).

Almost surely, 2^{11111100100011} is an apocalyptic number.

11111100100011 is a deficient number, since it is larger than the sum of its proper divisors (6259855829589).

11111100100011 is a wasteful number, since it uses less digits than its factorization.

11111100100011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87529 (or 87526 counting only the distinct ones).

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

Adding to 11111100100011 its reverse (11000100111111), we get a palindrome (22111200211122).

The spelling of 11111100100011 in words is "eleven trillion, one hundred eleven billion, one hundred million, one hundred thousand, eleven".