212303222017 has 2 divisors, whose sum is σ = 212303222018. Its totient is φ = 212303222016.

The previous prime is 212303222009. The next prime is 212303222101. The reversal of 212303222017 is 710222303212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 176459645041 + 35843576976 = 420071^2 + 189324^2 .

It is a cyclic number.

It is not a de Polignac number, because 212303222017 - 2³ = 212303222009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212303221982 and 212303222000.

It is not a weakly prime, because it can be changed into another prime (212303222317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106151611008 + 106151611009.

It is an arithmetic number, because the mean of its divisors is an integer number (106151611009).

Almost surely, 2^212303222017 is an apocalyptic number.

It is an amenable number.

212303222017 is a deficient number, since it is larger than the sum of its proper divisors (1).

212303222017 is an equidigital number, since it uses as much as digits as its factorization.

212303222017 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 212303222017 its reverse (710222303212), we get a palindrome (922525525229).

The spelling of 212303222017 in words is "two hundred twelve billion, three hundred three million, two hundred twenty-two thousand, seventeen".