1001001001103 has 2 divisors, whose sum is σ = 1001001001104. Its totient is φ = 1001001001102.

The previous prime is 1001001001067. The next prime is 1001001001151. The reversal of 1001001001103 is 3011001001001.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1001001001103 - 2¹⁴ = 1001000984719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1001001001163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500500500551 + 500500500552.

It is an arithmetic number, because the mean of its divisors is an integer number (500500500552).

Almost surely, 2^{1001001001103} is an apocalyptic number.

1001001001103 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001001001103 is an equidigital number, since it uses as much as digits as its factorization.

1001001001103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3, while the sum is 8.

Adding to 1001001001103 its reverse (3011001001001), we get a palindrome (4012002002104).

The spelling of 1001001001103 in words is "one trillion, one billion, one million, one thousand, one hundred three".