212000203321 has 2 divisors, whose sum is σ = 212000203322. Its totient is φ = 212000203320.

The previous prime is 212000203319. The next prime is 212000203343. The reversal of 212000203321 is 123302000212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208743903225 + 3256300096 = 456885^2 + 57064^2 .

It is a cyclic number.

It is not a de Polignac number, because 212000203321 - 2¹ = 212000203319 is a prime.

Together with 212000203319, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 212000203295 and 212000203304.

It is not a weakly prime, because it can be changed into another prime (212000203301) 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, 106000101660 + 106000101661.

It is an arithmetic number, because the mean of its divisors is an integer number (106000101661).

Almost surely, 2^212000203321 is an apocalyptic number.

It is an amenable number.

212000203321 is a deficient number, since it is larger than the sum of its proper divisors (1).

212000203321 is an equidigital number, since it uses as much as digits as its factorization.

212000203321 is an odious number, because the sum of its binary digits is odd.

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

Adding to 212000203321 its reverse (123302000212), we get a palindrome (335302203533).

The spelling of 212000203321 in words is "two hundred twelve billion, two hundred three thousand, three hundred twenty-one".