11111001100011 has 24 divisors (see below), whose sum is σ = 16060051612800. Its totient is φ = 7402338240000.

The previous prime is 11111001099973. The next prime is 11111001100057. The reversal of 11111001100011 is 11000110011111.

It is not a de Polignac number, because 11111001100011 - 2⁷ = 11111001099883 is a prime.

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

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 11111001099966 and 11111001100002.

It is not an unprimeable number, because it can be changed into a prime (11111001100711) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86321281 + ... + 86449901.

It is an arithmetic number, because the mean of its divisors is an integer number (669168817200).

Almost surely, 2^{11111001100011} is an apocalyptic number.

11111001100011 is a deficient number, since it is larger than the sum of its proper divisors (4949050512789).

11111001100011 is a wasteful number, since it uses less digits than its factorization.

11111001100011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135027 (or 135024 counting only the distinct ones).

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

Adding to 11111001100011 its reverse (11000110011111), we get a palindrome (22111111111122).

The spelling of 11111001100011 in words is "eleven trillion, one hundred eleven billion, one million, one hundred thousand, eleven".