11111101110001 has 4 divisors (see below), whose sum is σ = 11267595491904. Its totient is φ = 10954606728100.

The previous prime is 11111101109989. The next prime is 11111101110041. The reversal of 11111101110001 is 10001110111111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11111101110001 - 2⁹ = 11111101109489 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11111101110001.

It is not an unprimeable number, because it can be changed into a prime (11111101110041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78247190845 + ... + 78247190986.

It is an arithmetic number, because the mean of its divisors is an integer number (2816898872976).

Almost surely, 2^{11111101110001} is an apocalyptic number.

It is an amenable number.

11111101110001 is a deficient number, since it is larger than the sum of its proper divisors (156494381903).

11111101110001 is an equidigital number, since it uses as much as digits as its factorization.

11111101110001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156494381902.

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

Adding to 11111101110001 its reverse (10001110111111), we get a palindrome (21112211221112).

The spelling of 11111101110001 in words is "eleven trillion, one hundred eleven billion, one hundred one million, one hundred ten thousand, one".