212304242417 has 2 divisors, whose sum is σ = 212304242418. Its totient is φ = 212304242416.

The previous prime is 212304242407. The next prime is 212304242431. The reversal of 212304242417 is 714242403212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142045318321 + 70258924096 = 376889^2 + 265064^2 .

It is a cyclic number.

It is not a de Polignac number, because 212304242417 - 2⁴ = 212304242401 is a prime.

It is not a weakly prime, because it can be changed into another prime (212304242407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106152121208 + 106152121209.

It is an arithmetic number, because the mean of its divisors is an integer number (106152121209).

Almost surely, 2^212304242417 is an apocalyptic number.

It is an amenable number.

212304242417 is a deficient number, since it is larger than the sum of its proper divisors (1).

212304242417 is an equidigital number, since it uses as much as digits as its factorization.

212304242417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 32.

Adding to 212304242417 its reverse (714242403212), we get a palindrome (926546645629).

The spelling of 212304242417 in words is "two hundred twelve billion, three hundred four million, two hundred forty-two thousand, four hundred seventeen".