212023305121 has 2 divisors, whose sum is σ = 212023305122. Its totient is φ = 212023305120.

The previous prime is 212023305059. The next prime is 212023305127. The reversal of 212023305121 is 121503320212.

212023305121 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., 198167425600 + 13855879521 = 445160^2 + 117711^2 .

It is a cyclic number.

It is not a de Polignac number, because 212023305121 - 2¹¹ = 212023303073 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212023305092 and 212023305101.

It is not a weakly prime, because it can be changed into another prime (212023305127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106011652560 + 106011652561.

It is an arithmetic number, because the mean of its divisors is an integer number (106011652561).

Almost surely, 2^212023305121 is an apocalyptic number.

It is an amenable number.

212023305121 is a deficient number, since it is larger than the sum of its proper divisors (1).

212023305121 is an equidigital number, since it uses as much as digits as its factorization.

212023305121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 212023305121 its reverse (121503320212), we get a palindrome (333526625333).

The spelling of 212023305121 in words is "two hundred twelve billion, twenty-three million, three hundred five thousand, one hundred twenty-one".