11001001000001 has 32 divisors (see below), whose sum is σ = 11832435417600. Its totient is φ = 10208322432000.

The previous prime is 11001000999997. The next prime is 11001001000007. The reversal of 11001001000001 is 10000010010011.

It is a cyclic number.

It is not a de Polignac number, because 11001001000001 - 2² = 11001000999997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11001001000007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28485686 + ... + 28869296.

It is an arithmetic number, because the mean of its divisors is an integer number (369763606800).

Almost surely, 2^{11001001000001} is an apocalyptic number.

It is an amenable number.

11001001000001 is a deficient number, since it is larger than the sum of its proper divisors (831434417599).

11001001000001 is a wasteful number, since it uses less digits than its factorization.

11001001000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384041.

The product of its (nonzero) digits is 1, while the sum is 5.

Adding to 11001001000001 its reverse (10000010010011), we get a palindrome (21001011010012).

The spelling of 11001001000001 in words is "eleven trillion, one billion, one million, one", and thus it is an aban number and an uban number.