11100011111111 has 8 divisors (see below), whose sum is σ = 12024591010320. Its totient is φ = 10246164100536.

The previous prime is 11100011111107. The next prime is 11100011111113. The reversal of 11100011111111 is 11111111000111.

It is not a de Polignac number, because 11100011111111 - 2² = 11100011111107 is a prime.

It is a Duffinian number.

11100011111111 is a modest number, since divided by 1111111 gives 1110001 as remainder.

It is a zygodrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 11100011111092 and 11100011111101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11100011111113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2526172385 + ... + 2526176778.

It is an arithmetic number, because the mean of its divisors is an integer number (1503073876290).

Almost surely, 2^{11100011111111} is an apocalyptic number.

11100011111111 is a deficient number, since it is larger than the sum of its proper divisors (924579899209).

11100011111111 is an frugal number, since it uses more digits than its factorization.

11100011111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5052349202 (or 5052349176 counting only the distinct ones).

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

Adding to 11100011111111 its reverse (11111111000111), we get a palindrome (22211122111222).

It can be divided in two parts, 111000111 and 11111, that multiplied together give a palindrome (1233322233321).

The spelling of 11100011111111 in words is "eleven trillion, one hundred billion, eleven million, one hundred eleven thousand, one hundred eleven".