212321323030247 has 2 divisors, whose sum is σ = 212321323030248. Its totient is φ = 212321323030246.

The previous prime is 212321323030189. The next prime is 212321323030343. The reversal of 212321323030247 is 742030323123212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 212321323030247 - 2¹⁸ = 212321322768103 is a prime.

It is a super-2 number, since 2×212321323030247² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212321323035247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106160661515123 + 106160661515124.

It is an arithmetic number, because the mean of its divisors is an integer number (106160661515124).

Almost surely, 2^{212321323030247} is an apocalyptic number.

212321323030247 is a deficient number, since it is larger than the sum of its proper divisors (1).

212321323030247 is an equidigital number, since it uses as much as digits as its factorization.

212321323030247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 35.

Adding to 212321323030247 its reverse (742030323123212), we get a palindrome (954351646153459).

The spelling of 212321323030247 in words is "two hundred twelve trillion, three hundred twenty-one billion, three hundred twenty-three million, thirty thousand, two hundred forty-seven".