11100100111111 has 16 divisors (see below), whose sum is σ = 12257498913408. Its totient is φ = 9967465490400.

The previous prime is 11100100111081. The next prime is 11100100111117. The reversal of 11100100111111 is 11111100100111.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-11100100111111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11100100111117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3472381 + ... + 5853001.

It is an arithmetic number, because the mean of its divisors is an integer number (766093682088).

Almost surely, 2^{11100100111111} is an apocalyptic number.

11100100111111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11100100111111 is a deficient number, since it is larger than the sum of its proper divisors (1157398802297).

11100100111111 is a wasteful number, since it uses less digits than its factorization.

11100100111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2385822.

The product of its (nonzero) digits is 1, while the sum is 10.

Adding to 11100100111111 its reverse (11111100100111), we get a palindrome (22211200211222).

It can be divided in two parts, 11100100111 and 111, that multiplied together give a palindrome (1232111112321).

The spelling of 11100100111111 in words is "eleven trillion, one hundred billion, one hundred million, one hundred eleven thousand, one hundred eleven".