12021275017 has 2 divisors, whose sum is σ = 12021275018. Its totient is φ = 12021275016.

The previous prime is 12021274981. The next prime is 12021275069. The reversal of 12021275017 is 71057212021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12016763641 + 4511376 = 109621^2 + 2124^2 .

It is a cyclic number.

It is not a de Polignac number, because 12021275017 - 2²⁷ = 11887057289 is a prime.

It is a super-2 number, since 2×12021275017² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12021272017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6010637508 + 6010637509.

It is an arithmetic number, because the mean of its divisors is an integer number (6010637509).

Almost surely, 2^12021275017 is an apocalyptic number.

It is an amenable number.

12021275017 is a deficient number, since it is larger than the sum of its proper divisors (1).

12021275017 is an equidigital number, since it uses as much as digits as its factorization.

12021275017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1960, while the sum is 28.

Adding to 12021275017 its reverse (71057212021), we get a palindrome (83078487038).

The spelling of 12021275017 in words is "twelve billion, twenty-one million, two hundred seventy-five thousand, seventeen".