212444666444203 has 2 divisors, whose sum is σ = 212444666444204. Its totient is φ = 212444666444202.

The previous prime is 212444666444113. The next prime is 212444666444239. The reversal of 212444666444203 is 302444666444212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 212444666444203 - 2⁴⁵ = 177260294355371 is a prime.

It is not a weakly prime, because it can be changed into another prime (212444666454203) 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, 106222333222101 + 106222333222102.

It is an arithmetic number, because the mean of its divisors is an integer number (106222333222102).

Almost surely, 2^{212444666444203} is an apocalyptic number.

212444666444203 is a deficient number, since it is larger than the sum of its proper divisors (1).

212444666444203 is an equidigital number, since it uses as much as digits as its factorization.

212444666444203 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21233664, while the sum is 52.

Subtracting 212444666444203 from its reverse (302444666444212), we obtain a palindrome (90000000000009).

The spelling of 212444666444203 in words is "two hundred twelve trillion, four hundred forty-four billion, six hundred sixty-six million, four hundred forty-four thousand, two hundred three".