12017275217 has 2 divisors, whose sum is σ = 12017275218. Its totient is φ = 12017275216.

The previous prime is 12017275121. The next prime is 12017275241. The reversal of 12017275217 is 71257271021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11634642496 + 382632721 = 107864^2 + 19561^2 .

It is a cyclic number.

It is not a de Polignac number, because 12017275217 - 2¹⁶ = 12017209681 is a prime.

It is a super-2 number, since 2×12017275217² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12017275247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6008637608 + 6008637609.

It is an arithmetic number, because the mean of its divisors is an integer number (6008637609).

Almost surely, 2^12017275217 is an apocalyptic number.

It is an amenable number.

12017275217 is a deficient number, since it is larger than the sum of its proper divisors (1).

12017275217 is an equidigital number, since it uses as much as digits as its factorization.

12017275217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13720, while the sum is 35.

The spelling of 12017275217 in words is "twelve billion, seventeen million, two hundred seventy-five thousand, two hundred seventeen".