212334130322221 has 2 divisors, whose sum is σ = 212334130322222. Its totient is φ = 212334130322220.

The previous prime is 212334130322081. The next prime is 212334130322267. The reversal of 212334130322221 is 122223031433212.

It is a happy number.

212334130322221 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., 209465558055625 + 2868572266596 = 14472925^2 + 1693686^2 .

It is a cyclic number.

It is not a de Polignac number, because 212334130322221 - 2²³ = 212334121933613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212334130325221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106167065161110 + 106167065161111.

It is an arithmetic number, because the mean of its divisors is an integer number (106167065161111).

Almost surely, 2^{212334130322221} is an apocalyptic number.

It is an amenable number.

212334130322221 is a deficient number, since it is larger than the sum of its proper divisors (1).

212334130322221 is an equidigital number, since it uses as much as digits as its factorization.

212334130322221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 212334130322221 its reverse (122223031433212), we get a palindrome (334557161755433).

The spelling of 212334130322221 in words is "two hundred twelve trillion, three hundred thirty-four billion, one hundred thirty million, three hundred twenty-two thousand, two hundred twenty-one".