1303003212321 has 4 divisors (see below), whose sum is σ = 1737337616432. Its totient is φ = 868668808212.

The previous prime is 1303003212307. The next prime is 1303003212349. The reversal of 1303003212321 is 1232123003031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1303003212321 - 2¹⁰ = 1303003211297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1303003214321) 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 in 3 ways as a sum of consecutive naturals, for example, 217167202051 + ... + 217167202056.

It is an arithmetic number, because the mean of its divisors is an integer number (434334404108).

Almost surely, 2^{1303003212321} is an apocalyptic number.

It is an amenable number.

1303003212321 is a deficient number, since it is larger than the sum of its proper divisors (434334404111).

1303003212321 is an equidigital number, since it uses as much as digits as its factorization.

1303003212321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434334404110.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1303003212321 its reverse (1232123003031), we get a palindrome (2535126215352).

The spelling of 1303003212321 in words is "one trillion, three hundred three billion, three million, two hundred twelve thousand, three hundred twenty-one".