1001100111103 has 4 divisors (see below), whose sum is σ = 1001103081448. Its totient is φ = 1001097140760.

The previous prime is 1001100111079. The next prime is 1001100111107. The reversal of 1001100111103 is 3011110011001.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1001100111103 - 2¹⁷ = 1001099980031 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1001100111103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001100111107) 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, 903753 + ... + 1678978.

It is an arithmetic number, because the mean of its divisors is an integer number (250275770362).

Almost surely, 2^{1001100111103} is an apocalyptic number.

1001100111103 is a deficient number, since it is larger than the sum of its proper divisors (2970345).

1001100111103 is an equidigital number, since it uses as much as digits as its factorization.

1001100111103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2970344.

The product of its (nonzero) digits is 3, while the sum is 10.

Adding to 1001100111103 its reverse (3011110011001), we get a palindrome (4012210122104).

The spelling of 1001100111103 in words is "one trillion, one billion, one hundred million, one hundred eleven thousand, one hundred three".