212044321 has 2 divisors, whose sum is σ = 212044322. Its totient is φ = 212044320.

The previous prime is 212044303. The next prime is 212044363. The reversal of 212044321 is 123440212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119596096 + 92448225 = 10936^2 + 9615^2 .

It is a cyclic number.

It is not a de Polignac number, because 212044321 - 2⁹ = 212043809 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (212044381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106022160 + 106022161.

It is an arithmetic number, because the mean of its divisors is an integer number (106022161).

Almost surely, 2^212044321 is an apocalyptic number.

It is an amenable number.

212044321 is a deficient number, since it is larger than the sum of its proper divisors (1).

212044321 is an equidigital number, since it uses as much as digits as its factorization.

212044321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 212044321 is about 14561.7416884108. The cubic root of 212044321 is about 596.3147454330.

Adding to 212044321 its reverse (123440212), we get a palindrome (335484533).

The spelling of 212044321 in words is "two hundred twelve million, forty-four thousand, three hundred twenty-one".