211433330873 has 2 divisors, whose sum is σ = 211433330874. Its totient is φ = 211433330872.

The previous prime is 211433330851. The next prime is 211433330881. The reversal of 211433330873 is 378033334112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 196982405929 + 14450924944 = 443827^2 + 120212^2 .

It is a cyclic number.

It is not a de Polignac number, because 211433330873 - 2¹² = 211433326777 is a prime.

It is not a weakly prime, because it can be changed into another prime (211433030873) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105716665436 + 105716665437.

It is an arithmetic number, because the mean of its divisors is an integer number (105716665437).

Almost surely, 2^211433330873 is an apocalyptic number.

It is an amenable number.

211433330873 is a deficient number, since it is larger than the sum of its proper divisors (1).

211433330873 is an equidigital number, since it uses as much as digits as its factorization.

211433330873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108864, while the sum is 38.

Adding to 211433330873 its reverse (378033334112), we get a palindrome (589466664985).

The spelling of 211433330873 in words is "two hundred eleven billion, four hundred thirty-three million, three hundred thirty thousand, eight hundred seventy-three".