212030021017 has 2 divisors, whose sum is σ = 212030021018. Its totient is φ = 212030021016.

The previous prime is 212030021011. The next prime is 212030021141. The reversal of 212030021017 is 710120030212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211279041801 + 750979216 = 459651^2 + 27404^2 .

It is a cyclic number.

It is not a de Polignac number, because 212030021017 - 2⁷ = 212030020889 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212030020985 and 212030021003.

It is not a weakly prime, because it can be changed into another prime (212030021011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106015010508 + 106015010509.

It is an arithmetic number, because the mean of its divisors is an integer number (106015010509).

Almost surely, 2^212030021017 is an apocalyptic number.

It is an amenable number.

212030021017 is a deficient number, since it is larger than the sum of its proper divisors (1).

212030021017 is an equidigital number, since it uses as much as digits as its factorization.

212030021017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 168, while the sum is 19.

Adding to 212030021017 its reverse (710120030212), we get a palindrome (922150051229).

The spelling of 212030021017 in words is "two hundred twelve billion, thirty million, twenty-one thousand, seventeen".