812204402213 has 2 divisors, whose sum is σ = 812204402214. Its totient is φ = 812204402212.

The previous prime is 812204402117. The next prime is 812204402221. The reversal of 812204402213 is 312204402218.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 612616159204 + 199588243009 = 782698^2 + 446753^2 .

It is a cyclic number.

It is not a de Polignac number, because 812204402213 - 2³⁸ = 537326495269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (812204401213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 406102201106 + 406102201107.

It is an arithmetic number, because the mean of its divisors is an integer number (406102201107).

Almost surely, 2^812204402213 is an apocalyptic number.

It is an amenable number.

812204402213 is a deficient number, since it is larger than the sum of its proper divisors (1).

812204402213 is an equidigital number, since it uses as much as digits as its factorization.

812204402213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6144, while the sum is 29.

The spelling of 812204402213 in words is "eight hundred twelve billion, two hundred four million, four hundred two thousand, two hundred thirteen".