2320021321 has 2 divisors, whose sum is σ = 2320021322. Its totient is φ = 2320021320.

The previous prime is 2320021313. The next prime is 2320021387. The reversal of 2320021321 is 1231200232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1929405625 + 390615696 = 43925^2 + 19764^2 .

It is a cyclic number.

It is not a de Polignac number, because 2320021321 - 2³ = 2320021313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2320021295 and 2320021304.

It is not a weakly prime, because it can be changed into another prime (2320021021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160010660 + 1160010661.

It is an arithmetic number, because the mean of its divisors is an integer number (1160010661).

Almost surely, 2^2320021321 is an apocalyptic number.

It is an amenable number.

2320021321 is a deficient number, since it is larger than the sum of its proper divisors (1).

2320021321 is an equidigital number, since it uses as much as digits as its factorization.

2320021321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2320021321 is about 48166.5996412452. The cubic root of 2320021321 is about 1323.8252449364.

Adding to 2320021321 its reverse (1231200232), we get a palindrome (3551221553).

It can be divided in two parts, 23200 and 21321, that added together give a square (44521 = 211²).

The spelling of 2320021321 in words is "two billion, three hundred twenty million, twenty-one thousand, three hundred twenty-one".