212818033 has 2 divisors, whose sum is σ = 212818034. Its totient is φ = 212818032.

The previous prime is 212817991. The next prime is 212818093. The reversal of 212818033 is 330818212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195077089 + 17740944 = 13967^2 + 4212^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212818033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212817992 and 212818010.

It is not a weakly prime, because it can be changed into another prime (212818093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106409016 + 106409017.

It is an arithmetic number, because the mean of its divisors is an integer number (106409017).

Almost surely, 2^212818033 is an apocalyptic number.

It is an amenable number.

212818033 is a deficient number, since it is larger than the sum of its proper divisors (1).

212818033 is an equidigital number, since it uses as much as digits as its factorization.

212818033 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 212818033 is about 14588.2841006062. The cubic root of 212818033 is about 597.0391472112.

The spelling of 212818033 in words is "two hundred twelve million, eight hundred eighteen thousand, thirty-three".