212230334112221 has 2 divisors, whose sum is σ = 212230334112222. Its totient is φ = 212230334112220.

The previous prime is 212230334112163. The next prime is 212230334112253. The reversal of 212230334112221 is 122211433032212.

212230334112221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211974818016025 + 255516096196 = 14559355^2 + 505486^2 .

It is a cyclic number.

It is not a de Polignac number, because 212230334112221 - 2¹⁴ = 212230334095837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212230334112271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106115167056110 + 106115167056111.

It is an arithmetic number, because the mean of its divisors is an integer number (106115167056111).

Almost surely, 2^{212230334112221} is an apocalyptic number.

It is an amenable number.

212230334112221 is a deficient number, since it is larger than the sum of its proper divisors (1).

212230334112221 is an equidigital number, since it uses as much as digits as its factorization.

212230334112221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 212230334112221 its reverse (122211433032212), we get a palindrome (334441767144433).

The spelling of 212230334112221 in words is "two hundred twelve trillion, two hundred thirty billion, three hundred thirty-four million, one hundred twelve thousand, two hundred twenty-one".