212133323443 has 2 divisors, whose sum is σ = 212133323444. Its totient is φ = 212133323442.

The previous prime is 212133323431. The next prime is 212133323453. The reversal of 212133323443 is 344323331212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212133323443 is a prime.

It is not a weakly prime, because it can be changed into another prime (212133323453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106066661721 + 106066661722.

It is an arithmetic number, because the mean of its divisors is an integer number (106066661722).

Almost surely, 2^212133323443 is an apocalyptic number.

212133323443 is a deficient number, since it is larger than the sum of its proper divisors (1).

212133323443 is an equidigital number, since it uses as much as digits as its factorization.

212133323443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 31.

Adding to 212133323443 its reverse (344323331212), we get a palindrome (556456654655).

The spelling of 212133323443 in words is "two hundred twelve billion, one hundred thirty-three million, three hundred twenty-three thousand, four hundred forty-three".