212202330217 has 2 divisors, whose sum is σ = 212202330218. Its totient is φ = 212202330216.

The previous prime is 212202330209. The next prime is 212202330239. The reversal of 212202330217 is 712033202212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 156534174736 + 55668155481 = 395644^2 + 235941^2 .

It is a cyclic number.

It is not a de Polignac number, because 212202330217 - 2³ = 212202330209 is a prime.

It is a super-2 number, since 2×212202330217² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212202330191 and 212202330200.

It is not a weakly prime, because it can be changed into another prime (212202330617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106101165108 + 106101165109.

It is an arithmetic number, because the mean of its divisors is an integer number (106101165109).

Almost surely, 2^212202330217 is an apocalyptic number.

It is an amenable number.

212202330217 is a deficient number, since it is larger than the sum of its proper divisors (1).

212202330217 is an equidigital number, since it uses as much as digits as its factorization.

212202330217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 25.

Adding to 212202330217 its reverse (712033202212), we get a palindrome (924235532429).

The spelling of 212202330217 in words is "two hundred twelve billion, two hundred two million, three hundred thirty thousand, two hundred seventeen".