20003313023321 has 4 divisors (see below), whose sum is σ = 20003329237044. Its totient is φ = 20003296809600.

The previous prime is 20003313023299. The next prime is 20003313023339. The reversal of 20003313023321 is 12332031330002.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14321115705625 + 5682197317696 = 3784325^2 + 2383736^2 .

It is a cyclic number.

It is not a de Polignac number, because 20003313023321 - 2⁶ = 20003313023257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20003313023341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6088820 + ... + 8779541.

It is an arithmetic number, because the mean of its divisors is an integer number (5000832309261).

Almost surely, 2^{20003313023321} is an apocalyptic number.

It is an amenable number.

20003313023321 is a deficient number, since it is larger than the sum of its proper divisors (16213723).

20003313023321 is a wasteful number, since it uses less digits than its factorization.

20003313023321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16213722.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 20003313023321 its reverse (12332031330002), we get a palindrome (32335344353323).

The spelling of 20003313023321 in words is "twenty trillion, three billion, three hundred thirteen million, twenty-three thousand, three hundred twenty-one".