2123003321 has 2 divisors, whose sum is σ = 2123003322. Its totient is φ = 2123003320.

The previous prime is 2123003317. The next prime is 2123003341. The reversal of 2123003321 is 1233003212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1558275625 + 564727696 = 39475^2 + 23764^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123003321 - 2² = 2123003317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2123003321.

It is not a weakly prime, because it can be changed into another prime (2123003341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061501660 + 1061501661.

It is an arithmetic number, because the mean of its divisors is an integer number (1061501661).

Almost surely, 2^2123003321 is an apocalyptic number.

It is an amenable number.

2123003321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123003321 is an equidigital number, since it uses as much as digits as its factorization.

2123003321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 2123003321 is about 46076.0601722847. The cubic root of 2123003321 is about 1285.2380006001.

Adding to 2123003321 its reverse (1233003212), we get a palindrome (3356006533).

The spelling of 2123003321 in words is "two billion, one hundred twenty-three million, three thousand, three hundred twenty-one".