11111100100101 has 12 divisors (see below), whose sum is σ = 16121337068928. Its totient is φ = 7374183024744.

The previous prime is 11111100100099. The next prime is 11111100100103. The reversal of 11111100100101 is 10100100111111.

It is an interprime number because it is at equal distance from previous prime (11111100100099) and next prime (11111100100103).

It is not a de Polignac number, because 11111100100101 - 2¹ = 11111100100099 is a prime.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111100100103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2768084715 + ... + 2768088728.

It is an arithmetic number, because the mean of its divisors is an integer number (1343444755744).

Almost surely, 2^{11111100100101} is an apocalyptic number.

It is an amenable number.

11111100100101 is a deficient number, since it is larger than the sum of its proper divisors (5010236968827).

11111100100101 is a wasteful number, since it uses less digits than its factorization.

11111100100101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5536173672 (or 5536173669 counting only the distinct ones).

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

Adding to 11111100100101 its reverse (10100100111111), we get a palindrome (21211200211212).

The spelling of 11111100100101 in words is "eleven trillion, one hundred eleven billion, one hundred million, one hundred thousand, one hundred one".