212302321243 has 2 divisors, whose sum is σ = 212302321244. Its totient is φ = 212302321242.

The previous prime is 212302321241. The next prime is 212302321249. The reversal of 212302321243 is 342123203212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212302321243 - 2¹ = 212302321241 is a prime.

It is a super-3 number, since 3×212302321243³ (a number of 35 digits) contains 333 as substring.

Together with 212302321241, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (212302321241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106151160621 + 106151160622.

It is an arithmetic number, because the mean of its divisors is an integer number (106151160622).

Almost surely, 2^212302321243 is an apocalyptic number.

212302321243 is a deficient number, since it is larger than the sum of its proper divisors (1).

212302321243 is an equidigital number, since it uses as much as digits as its factorization.

212302321243 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 212302321243 its reverse (342123203212), we get a palindrome (554425524455).

The spelling of 212302321243 in words is "two hundred twelve billion, three hundred two million, three hundred twenty-one thousand, two hundred forty-three".