11111101101112 has 16 divisors (see below), whose sum is σ = 20961126312840. Its totient is φ = 5521467417696.

The previous prime is 11111101101047. The next prime is 11111101101167. The reversal of 11111101101112 is 21110110111111.

It is a junction number, because it is equal to n+sod(n) for n = 11111101101092 and 11111101101101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4260390223 + ... + 4260392830.

Almost surely, 2^{11111101101112} is an apocalyptic number.

It is an amenable number.

11111101101112 is a deficient number, since it is larger than the sum of its proper divisors (9850025211728).

11111101101112 is a wasteful number, since it uses less digits than its factorization.

11111101101112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8520783222 (or 8520783218 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 13.

Adding to 11111101101112 its reverse (21110110111111), we get a palindrome (32221211212223).

Subtracting 11111101101112 from its reverse (21110110111111), we obtain a palindrome (9999009009999).

The spelling of 11111101101112 in words is "eleven trillion, one hundred eleven billion, one hundred one million, one hundred one thousand, one hundred twelve".