210021321332323 has 2 divisors, whose sum is σ = 210021321332324. Its totient is φ = 210021321332322.

The previous prime is 210021321332293. The next prime is 210021321332371. The reversal of 210021321332323 is 323233123120012.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 210021321332323 - 2²⁵ = 210021287777891 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210021321332291 and 210021321332300.

It is not a weakly prime, because it can be changed into another prime (210021321332623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105010660666161 + 105010660666162.

It is an arithmetic number, because the mean of its divisors is an integer number (105010660666162).

Almost surely, 2^{210021321332323} is an apocalyptic number.

210021321332323 is a deficient number, since it is larger than the sum of its proper divisors (1).

210021321332323 is an equidigital number, since it uses as much as digits as its factorization.

210021321332323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 210021321332323 its reverse (323233123120012), we get a palindrome (533254444452335).

The spelling of 210021321332323 in words is "two hundred ten trillion, twenty-one billion, three hundred twenty-one million, three hundred thirty-two thousand, three hundred twenty-three".