1000001001101 has 4 divisors (see below), whose sum is σ = 1018868944572. Its totient is φ = 981133057632.

The previous prime is 1000001001091. The next prime is 1000001001107. The reversal of 1000001001101 is 1011001000001.

1000001001101 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 385329321001 + 614671680100 = 620749^2 + 784010^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000001001101 - 2³⁰ = 998927259277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000001001107) 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, 9433971656 + ... + 9433971761.

It is an arithmetic number, because the mean of its divisors is an integer number (254717236143).

Almost surely, 2^{1000001001101} is an apocalyptic number.

It is an amenable number.

1000001001101 is a deficient number, since it is larger than the sum of its proper divisors (18867943471).

1000001001101 is an equidigital number, since it uses as much as digits as its factorization.

1000001001101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18867943470.

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

Adding to 1000001001101 its reverse (1011001000001), we get a palindrome (2011002001102).

The spelling of 1000001001101 in words is "one trillion, one million, one thousand, one hundred one".