212535344321 has 2 divisors, whose sum is σ = 212535344322. Its totient is φ = 212535344320.

The previous prime is 212535344311. The next prime is 212535344347. The reversal of 212535344321 is 123443535212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170883024400 + 41652319921 = 413380^2 + 204089^2 .

It is a cyclic number.

It is not a de Polignac number, because 212535344321 - 2¹⁴ = 212535327937 is a prime.

It is not a weakly prime, because it can be changed into another prime (212535344311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106267672160 + 106267672161.

It is an arithmetic number, because the mean of its divisors is an integer number (106267672161).

Almost surely, 2^212535344321 is an apocalyptic number.

It is an amenable number.

212535344321 is a deficient number, since it is larger than the sum of its proper divisors (1).

212535344321 is an equidigital number, since it uses as much as digits as its factorization.

212535344321 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 86400, while the sum is 35.

Adding to 212535344321 its reverse (123443535212), we get a palindrome (335978879533).

The spelling of 212535344321 in words is "two hundred twelve billion, five hundred thirty-five million, three hundred forty-four thousand, three hundred twenty-one".