17212001 has 2 divisors, whose sum is σ = 17212002. Its totient is φ = 17212000.

The previous prime is 17211989. The next prime is 17212057. The reversal of 17212001 is 10021271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17181025 + 30976 = 4145^2 + 176^2 .

It is a cyclic number.

It is not a de Polignac number, because 17212001 - 2⁶ = 17211937 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (17212201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8606000 + 8606001.

It is an arithmetic number, because the mean of its divisors is an integer number (8606001).

Almost surely, 2^17212001 is an apocalyptic number.

It is an amenable number.

17212001 is a deficient number, since it is larger than the sum of its proper divisors (1).

17212001 is an equidigital number, since it uses as much as digits as its factorization.

17212001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28, while the sum is 14.

The square root of 17212001 is about 4148.7348674024. The cubic root of 17212001 is about 258.1925980115.

Adding to 17212001 its reverse (10021271), we get a palindrome (27233272).

The spelling of 17212001 in words is "seventeen million, two hundred twelve thousand, one".