2003122331321 has 4 divisors (see below), whose sum is σ = 2003142997392. Its totient is φ = 2003101665252.

The previous prime is 2003122331317. The next prime is 2003122331363. The reversal of 2003122331321 is 1231332213002.

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 a cyclic number.

It is not a de Polignac number, because 2003122331321 - 2² = 2003122331317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2003122331311) 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, 10186955 + ... + 10381728.

It is an arithmetic number, because the mean of its divisors is an integer number (500785749348).

Almost surely, 2^{2003122331321} is an apocalyptic number.

It is an amenable number.

2003122331321 is a deficient number, since it is larger than the sum of its proper divisors (20666071).

2003122331321 is an equidigital number, since it uses as much as digits as its factorization.

2003122331321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20666070.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 2003122331321 its reverse (1231332213002), we get a palindrome (3234454544323).

The spelling of 2003122331321 in words is "two trillion, three billion, one hundred twenty-two million, three hundred thirty-one thousand, three hundred twenty-one".