212105116343 has 2 divisors, whose sum is σ = 212105116344. Its totient is φ = 212105116342.

The previous prime is 212105116303. The next prime is 212105116351. The reversal of 212105116343 is 343611501212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212105116343 - 2²⁰ = 212104067767 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212105116303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106052558171 + 106052558172.

It is an arithmetic number, because the mean of its divisors is an integer number (106052558172).

Almost surely, 2^212105116343 is an apocalyptic number.

212105116343 is a deficient number, since it is larger than the sum of its proper divisors (1).

212105116343 is an equidigital number, since it uses as much as digits as its factorization.

212105116343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 212105116343 its reverse (343611501212), we get a palindrome (555716617555).

The spelling of 212105116343 in words is "two hundred twelve billion, one hundred five million, one hundred sixteen thousand, three hundred forty-three".