213023330032321 has 2 divisors, whose sum is σ = 213023330032322. Its totient is φ = 213023330032320.

The previous prime is 213023330032319. The next prime is 213023330032343. The reversal of 213023330032321 is 123230033320312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165569982760000 + 47453347272321 = 12867400^2 + 6888639^2 .

It is a cyclic number.

It is not a de Polignac number, because 213023330032321 - 2¹ = 213023330032319 is a prime.

Together with 213023330032319, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 213023330032321.

It is not a weakly prime, because it can be changed into another prime (213023330132321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106511665016160 + 106511665016161.

It is an arithmetic number, because the mean of its divisors is an integer number (106511665016161).

Almost surely, 2^{213023330032321} is an apocalyptic number.

It is an amenable number.

213023330032321 is a deficient number, since it is larger than the sum of its proper divisors (1).

213023330032321 is an equidigital number, since it uses as much as digits as its factorization.

213023330032321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 28.

Adding to 213023330032321 its reverse (123230033320312), we get a palindrome (336253363352633).

The spelling of 213023330032321 in words is "two hundred thirteen trillion, twenty-three billion, three hundred thirty million, thirty-two thousand, three hundred twenty-one".