11110111110001 has 4 divisors (see below), whose sum is σ = 11110144230900. Its totient is φ = 11110077989104.

The previous prime is 11110111109987. The next prime is 11110111110031. The reversal of 11110111110001 is 10001111101111.

It is a happy number.

11110111110001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5075468294400 + 6034642815601 = 2252880^2 + 2456551^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11110111110001 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 11110111110001.

It is not an unprimeable number, because it can be changed into a prime (11110111110031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16052086 + ... + 16729903.

It is an arithmetic number, because the mean of its divisors is an integer number (2777536057725).

Almost surely, 2^{11110111110001} is an apocalyptic number.

It is an amenable number.

11110111110001 is a deficient number, since it is larger than the sum of its proper divisors (33120899).

11110111110001 is an equidigital number, since it uses as much as digits as its factorization.

11110111110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33120898.

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

Adding to 11110111110001 its reverse (10001111101111), we get a palindrome (21111222211112).

It can be divided in two parts, 111101111 and 10001, that multiplied together give a palindrome (1111122211111).

The spelling of 11110111110001 in words is "eleven trillion, one hundred ten billion, one hundred eleven million, one hundred ten thousand, one".