212340121212343 has 2 divisors, whose sum is σ = 212340121212344. Its totient is φ = 212340121212342.

The previous prime is 212340121212319. The next prime is 212340121212383. The reversal of 212340121212343 is 343212121043212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212340121212343 - 2³³ = 212331531277751 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212340121212383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106170060606171 + 106170060606172.

It is an arithmetic number, because the mean of its divisors is an integer number (106170060606172).

Almost surely, 2^{212340121212343} is an apocalyptic number.

212340121212343 is a deficient number, since it is larger than the sum of its proper divisors (1).

212340121212343 is an equidigital number, since it uses as much as digits as its factorization.

212340121212343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 212340121212343 its reverse (343212121043212), we get a palindrome (555552242255555).

The spelling of 212340121212343 in words is "two hundred twelve trillion, three hundred forty billion, one hundred twenty-one million, two hundred twelve thousand, three hundred forty-three".