212440412017 has 2 divisors, whose sum is σ = 212440412018. Its totient is φ = 212440412016.

The previous prime is 212440412011. The next prime is 212440412069. The reversal of 212440412017 is 710214044212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196795155456 + 15645256561 = 443616^2 + 125081^2 .

It is a cyclic number.

It is not a de Polignac number, because 212440412017 - 2¹⁹ = 212439887729 is a prime.

It is not a weakly prime, because it can be changed into another prime (212440412011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106220206008 + 106220206009.

It is an arithmetic number, because the mean of its divisors is an integer number (106220206009).

Almost surely, 2^212440412017 is an apocalyptic number.

It is an amenable number.

212440412017 is a deficient number, since it is larger than the sum of its proper divisors (1).

212440412017 is an equidigital number, since it uses as much as digits as its factorization.

212440412017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3584, while the sum is 28.

Adding to 212440412017 its reverse (710214044212), we get a palindrome (922654456229).

The spelling of 212440412017 in words is "two hundred twelve billion, four hundred forty million, four hundred twelve thousand, seventeen".