200212211211217 has 2 divisors, whose sum is σ = 200212211211218. Its totient is φ = 200212211211216.

The previous prime is 200212211211143. The next prime is 200212211211227. The reversal of 200212211211217 is 712112112212002.

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., 185939841472576 + 14272369738641 = 13635976^2 + 3777879^2 .

It is a cyclic number.

It is not a de Polignac number, because 200212211211217 - 2²³ = 200212202822609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200212211211191 and 200212211211200.

It is not a weakly prime, because it can be changed into another prime (200212211211227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100106105605608 + 100106105605609.

It is an arithmetic number, because the mean of its divisors is an integer number (100106105605609).

Almost surely, 2^{200212211211217} is an apocalyptic number.

It is an amenable number.

200212211211217 is a deficient number, since it is larger than the sum of its proper divisors (1).

200212211211217 is an equidigital number, since it uses as much as digits as its factorization.

200212211211217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 448, while the sum is 25.

Adding to 200212211211217 its reverse (712112112212002), we get a palindrome (912324323423219).

The spelling of 200212211211217 in words is "two hundred trillion, two hundred twelve billion, two hundred eleven million, two hundred eleven thousand, two hundred seventeen".