1001111102003 has 2 divisors, whose sum is σ = 1001111102004. Its totient is φ = 1001111102002.

The previous prime is 1001111101997. The next prime is 1001111102021. The reversal of 1001111102003 is 3002011111001.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1001111102003 - 2²⁴ = 1001094324787 is a prime.

It is a super-2 number, since 2×1001111102003² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1001111102023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500555551001 + 500555551002.

It is an arithmetic number, because the mean of its divisors is an integer number (500555551002).

Almost surely, 2^{1001111102003} is an apocalyptic number.

1001111102003 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001111102003 is an equidigital number, since it uses as much as digits as its factorization.

1001111102003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 1001111102003 its reverse (3002011111001), we get a palindrome (4003122213004).

The spelling of 1001111102003 in words is "one trillion, one billion, one hundred eleven million, one hundred two thousand, three".