11001111110001 has 24 divisors (see below), whose sum is σ = 16219898136000. Its totient is φ = 7182965529312.

The previous prime is 11001111109999. The next prime is 11001111110021. The reversal of 11001111110001 is 10001111110011.

It is not a de Polignac number, because 11001111110001 - 2¹ = 11001111109999 is a prime.

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 (11001111110021) 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, 38365941 + ... + 38651618.

It is an arithmetic number, because the mean of its divisors is an integer number (675829089000).

Almost surely, 2^{11001111110001} is an apocalyptic number.

It is an amenable number.

11001111110001 is a deficient number, since it is larger than the sum of its proper divisors (5218787025999).

11001111110001 is a wasteful number, since it uses less digits than its factorization.

11001111110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77017893 (or 77017890 counting only the distinct ones).

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

Adding to 11001111110001 its reverse (10001111110011), we get a palindrome (21002222220012).

The spelling of 11001111110001 in words is "eleven trillion, one billion, one hundred eleven million, one hundred ten thousand, one".