12001001303 has 4 divisors (see below), whose sum is σ = 12003052680. Its totient is φ = 11998949928.

The previous prime is 12001001273. The next prime is 12001001323. The reversal of 12001001303 is 30310010021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30310010021 = 58189 ⋅520889.

It is a cyclic number.

It is not a de Polignac number, because 12001001303 - 2⁶ = 12001001239 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001001323) 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, 1016888 + ... + 1028621.

It is an arithmetic number, because the mean of its divisors is an integer number (3000763170).

Almost surely, 2^12001001303 is an apocalyptic number.

12001001303 is a deficient number, since it is larger than the sum of its proper divisors (2051377).

12001001303 is an equidigital number, since it uses as much as digits as its factorization.

12001001303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2051376.

The product of its (nonzero) digits is 18, while the sum is 11.

Adding to 12001001303 its reverse (30310010021), we get a palindrome (42311011324).

The spelling of 12001001303 in words is "twelve billion, one million, one thousand, three hundred three".