212013202217 has 2 divisors, whose sum is σ = 212013202218. Its totient is φ = 212013202216.

The previous prime is 212013202201. The next prime is 212013202223. The reversal of 212013202217 is 712202310212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 129948714256 + 82064487961 = 360484^2 + 286469^2 .

It is a cyclic number.

It is not a de Polignac number, because 212013202217 - 2⁴ = 212013202201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212013202192 and 212013202201.

It is not a weakly prime, because it can be changed into another prime (212013201217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106006601108 + 106006601109.

It is an arithmetic number, because the mean of its divisors is an integer number (106006601109).

Almost surely, 2^212013202217 is an apocalyptic number.

It is an amenable number.

212013202217 is a deficient number, since it is larger than the sum of its proper divisors (1).

212013202217 is an equidigital number, since it uses as much as digits as its factorization.

212013202217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 212013202217 its reverse (712202310212), we get a palindrome (924215512429).

The spelling of 212013202217 in words is "two hundred twelve billion, thirteen million, two hundred two thousand, two hundred seventeen".