20212213212343 has 2 divisors, whose sum is σ = 20212213212344. Its totient is φ = 20212213212342.

The previous prime is 20212213212283. The next prime is 20212213212421. The reversal of 20212213212343 is 34321231221202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20212213212343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20212213212743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106106606171 + 10106106606172.

It is an arithmetic number, because the mean of its divisors is an integer number (10106106606172).

Almost surely, 2^{20212213212343} is an apocalyptic number.

20212213212343 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212213212343 is an equidigital number, since it uses as much as digits as its factorization.

20212213212343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 20212213212343 its reverse (34321231221202), we get a palindrome (54533444433545).

The spelling of 20212213212343 in words is "twenty trillion, two hundred twelve billion, two hundred thirteen million, two hundred twelve thousand, three hundred forty-three".