11111101111101 has 16 divisors (see below), whose sum is σ = 14995514594880. Its totient is φ = 7317202569600.

The previous prime is 11111101111091. The next prime is 11111101111141. The reversal of 11111101111101 is 10111110111111.

It is not a de Polignac number, because 11111101111101 - 2⁶ = 11111101111037 is a prime.

It is a super-2 number, since 2×11111101111101² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111101111141) 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, 19517010 + ... + 20078243.

It is an arithmetic number, because the mean of its divisors is an integer number (937219662180).

Almost surely, 2^{11111101111101} is an apocalyptic number.

It is an amenable number.

11111101111101 is a deficient number, since it is larger than the sum of its proper divisors (3884413483779).

11111101111101 is a wasteful number, since it uses less digits than its factorization.

11111101111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39596396.

The product of its (nonzero) digits is 1, while the sum is 12.

Adding to 11111101111101 its reverse (10111110111111), we get a palindrome (21222211222212).

It can be divided in two parts, 1111110111110 and 1, that added together give a palindrome (1111110111111).

The spelling of 11111101111101 in words is "eleven trillion, one hundred eleven billion, one hundred one million, one hundred eleven thousand, one hundred one".