210012021017 has 2 divisors, whose sum is σ = 210012021018. Its totient is φ = 210012021016.

The previous prime is 210012020993. The next prime is 210012021067. The reversal of 210012021017 is 710120210012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195643443856 + 14368577161 = 442316^2 + 119869^2 .

It is a cyclic number.

It is not a de Polignac number, because 210012021017 - 2⁸ = 210012020761 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 210012020986 and 210012021004.

It is not a weakly prime, because it can be changed into another prime (210012021067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105006010508 + 105006010509.

It is an arithmetic number, because the mean of its divisors is an integer number (105006010509).

Almost surely, 2^210012021017 is an apocalyptic number.

It is an amenable number.

210012021017 is a deficient number, since it is larger than the sum of its proper divisors (1).

210012021017 is an equidigital number, since it uses as much as digits as its factorization.

210012021017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 17.

Adding to 210012021017 its reverse (710120210012), we get a palindrome (920132231029).

The spelling of 210012021017 in words is "two hundred ten billion, twelve million, twenty-one thousand, seventeen".