11111001110001 has 24 divisors (see below), whose sum is σ = 17284268129856. Its totient is φ = 6837345842400.

The previous prime is 11111001109997. The next prime is 11111001110003. The reversal of 11111001110001 is 10001110011111.

It is not a de Polignac number, because 11111001110001 - 2² = 11111001109997 is a prime.

It is a super-5 number, since 5×11111001110001⁵ (a number of 66 digits) contains 55555 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (11111001110003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2870116 + ... + 5519018.

It is an arithmetic number, because the mean of its divisors is an integer number (720177838744).

Almost surely, 2^{11111001110001} is an apocalyptic number.

It is an amenable number.

11111001110001 is a deficient number, since it is larger than the sum of its proper divisors (6173267019855).

11111001110001 is a wasteful number, since it uses less digits than its factorization.

11111001110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2684773 (or 2684770 counting only the distinct ones).

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

Adding to 11111001110001 its reverse (10001110011111), we get a palindrome (21112111121112).

The spelling of 11111001110001 in words is "eleven trillion, one hundred eleven billion, one million, one hundred ten thousand, one".