211242330433 has 2 divisors, whose sum is σ = 211242330434. Its totient is φ = 211242330432.

The previous prime is 211242330421. The next prime is 211242330437. The reversal of 211242330433 is 334033242112.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 174704772529 + 36537557904 = 417977^2 + 191148^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211242330433 is a prime.

It is not a weakly prime, because it can be changed into another prime (211242330437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105621165216 + 105621165217.

It is an arithmetic number, because the mean of its divisors is an integer number (105621165217).

Almost surely, 2^211242330433 is an apocalyptic number.

It is an amenable number.

211242330433 is a deficient number, since it is larger than the sum of its proper divisors (1).

211242330433 is an equidigital number, since it uses as much as digits as its factorization.

211242330433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 211242330433 its reverse (334033242112), we get a palindrome (545275572545).

The spelling of 211242330433 in words is "two hundred eleven billion, two hundred forty-two million, three hundred thirty thousand, four hundred thirty-three".