1001320010203 has 4 divisors (see below), whose sum is σ = 1005810234688. Its totient is φ = 996829785720.

The previous prime is 1001320010137. The next prime is 1001320010209. The reversal of 1001320010203 is 3020100231001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1001320010203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1001320010209) 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, 2245111908 + ... + 2245112353.

It is an arithmetic number, because the mean of its divisors is an integer number (251452558672).

Almost surely, 2^{1001320010203} is an apocalyptic number.

1001320010203 is a deficient number, since it is larger than the sum of its proper divisors (4490224485).

1001320010203 is an equidigital number, since it uses as much as digits as its factorization.

1001320010203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4490224484.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 1001320010203 its reverse (3020100231001), we get a palindrome (4021420241204).

The spelling of 1001320010203 in words is "one trillion, one billion, three hundred twenty million, ten thousand, two hundred three".