212012360689 has 2 divisors, whose sum is σ = 212012360690. Its totient is φ = 212012360688.

The previous prime is 212012360683. The next prime is 212012360717. The reversal of 212012360689 is 986063210212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203385666289 + 8626694400 = 450983^2 + 92880^2 .

It is a cyclic number.

It is not a de Polignac number, because 212012360689 - 2⁹ = 212012360177 is a prime.

It is not a weakly prime, because it can be changed into another prime (212012360683) 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, 106006180344 + 106006180345.

It is an arithmetic number, because the mean of its divisors is an integer number (106006180345).

Almost surely, 2^212012360689 is an apocalyptic number.

It is an amenable number.

212012360689 is a deficient number, since it is larger than the sum of its proper divisors (1).

212012360689 is an equidigital number, since it uses as much as digits as its factorization.

212012360689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 40.

It can be divided in two parts, 2120123 and 60689, that added together give a palindrome (2180812).

The spelling of 212012360689 in words is "two hundred twelve billion, twelve million, three hundred sixty thousand, six hundred eighty-nine".