212211120230321 has 2 divisors, whose sum is σ = 212211120230322. Its totient is φ = 212211120230320.

The previous prime is 212211120230311. The next prime is 212211120230353. The reversal of 212211120230321 is 123032021112212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208093203790096 + 4117916440225 = 14425436^2 + 2029265^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212211120230321 is a prime.

It is not a weakly prime, because it can be changed into another prime (212211120230311) 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, 106105560115160 + 106105560115161.

It is an arithmetic number, because the mean of its divisors is an integer number (106105560115161).

Almost surely, 2^{212211120230321} is an apocalyptic number.

It is an amenable number.

212211120230321 is a deficient number, since it is larger than the sum of its proper divisors (1).

212211120230321 is an equidigital number, since it uses as much as digits as its factorization.

212211120230321 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 212211120230321 its reverse (123032021112212), we get a palindrome (335243141342533).

The spelling of 212211120230321 in words is "two hundred twelve trillion, two hundred eleven billion, one hundred twenty million, two hundred thirty thousand, three hundred twenty-one".