212021304343 has 2 divisors, whose sum is σ = 212021304344. Its totient is φ = 212021304342.

The previous prime is 212021304337. The next prime is 212021304347. The reversal of 212021304343 is 343403120212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212021304343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212021304347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106010652171 + 106010652172.

It is an arithmetic number, because the mean of its divisors is an integer number (106010652172).

Almost surely, 2^212021304343 is an apocalyptic number.

212021304343 is a deficient number, since it is larger than the sum of its proper divisors (1).

212021304343 is an equidigital number, since it uses as much as digits as its factorization.

212021304343 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 212021304343 its reverse (343403120212), we get a palindrome (555424424555).

The spelling of 212021304343 in words is "two hundred twelve billion, twenty-one million, three hundred four thousand, three hundred forty-three".