11110111111001 has 6 divisors (see below), whose sum is σ = 12924006802650. Its totient is φ = 9522952380816.

The previous prime is 11110111110991. The next prime is 11110111111051. The reversal of 11110111111001 is 10011111101111.

It can be written as a sum of positive squares in only one way, i.e., 8699544351001 + 2410566760000 = 2949499^2 + 1552600^2 .

It is not a de Polignac number, because 11110111111001 - 2⁶ = 11110111110937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11110111111051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 113368480676 + ... + 113368480773.

It is an arithmetic number, because the mean of its divisors is an integer number (2154001133775).

Almost surely, 2^{11110111111001} is an apocalyptic number.

It is an amenable number.

11110111111001 is a deficient number, since it is larger than the sum of its proper divisors (1813895691649).

11110111111001 is an equidigital number, since it uses as much as digits as its factorization.

11110111111001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226736961463 (or 226736961456 counting only the distinct ones).

The product of its (nonzero) digits is 1, while the sum is 11.

Adding to 11110111111001 its reverse (10011111101111), we get a palindrome (21121222212112).

The spelling of 11110111111001 in words is "eleven trillion, one hundred ten billion, one hundred eleven million, one hundred eleven thousand, one".