2321533021 has 2 divisors, whose sum is σ = 2321533022. Its totient is φ = 2321533020.

The previous prime is 2321533009. The next prime is 2321533061. The reversal of 2321533021 is 1203351232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2043944100 + 277588921 = 45210^2 + 16661^2 .

It is a cyclic number.

It is not a de Polignac number, because 2321533021 - 2⁷ = 2321532893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2321532983 and 2321533001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2321533061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160766510 + 1160766511.

It is an arithmetic number, because the mean of its divisors is an integer number (1160766511).

Almost surely, 2^2321533021 is an apocalyptic number.

It is an amenable number.

2321533021 is a deficient number, since it is larger than the sum of its proper divisors (1).

2321533021 is an equidigital number, since it uses as much as digits as its factorization.

2321533021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 2321533021 is about 48182.2894952077. The cubic root of 2321533021 is about 1324.1127124269.

Adding to 2321533021 its reverse (1203351232), we get a palindrome (3524884253).

The spelling of 2321533021 in words is "two billion, three hundred twenty-one million, five hundred thirty-three thousand, twenty-one".