203320210001321 has 16 divisors (see below), whose sum is σ = 234423524394624. Its totient is φ = 172731304376064.

The previous prime is 203320210001269. The next prime is 203320210001327. The reversal of 203320210001321 is 123100012023302.

It is not a de Polignac number, because 203320210001321 - 2⁶ = 203320210001257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203320210001293 and 203320210001302.

It is not an unprimeable number, because it can be changed into a prime (203320210001327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 180199295 + ... + 181324091.

It is an arithmetic number, because the mean of its divisors is an integer number (14651470274664).

Almost surely, 2^{203320210001321} is an apocalyptic number.

It is an amenable number.

203320210001321 is a deficient number, since it is larger than the sum of its proper divisors (31103314393303).

203320210001321 is a wasteful number, since it uses less digits than its factorization.

203320210001321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353440.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 203320210001321 its reverse (123100012023302), we get a palindrome (326420222024623).

The spelling of 203320210001321 in words is "two hundred three trillion, three hundred twenty billion, two hundred ten million, one thousand, three hundred twenty-one".