12056522017 has 2 divisors, whose sum is σ = 12056522018. Its totient is φ = 12056522016.

The previous prime is 12056522003. The next prime is 12056522057. The reversal of 12056522017 is 71022565021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12020052496 + 36469521 = 109636^2 + 6039^2 .

It is an emirp because it is prime and its reverse (71022565021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12056522017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12056522017.

It is not a weakly prime, because it can be changed into another prime (12056522057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6028261008 + 6028261009.

It is an arithmetic number, because the mean of its divisors is an integer number (6028261009).

Almost surely, 2^12056522017 is an apocalyptic number.

It is an amenable number.

12056522017 is a deficient number, since it is larger than the sum of its proper divisors (1).

12056522017 is an equidigital number, since it uses as much as digits as its factorization.

12056522017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8400, while the sum is 31.

The spelling of 12056522017 in words is "twelve billion, fifty-six million, five hundred twenty-two thousand, seventeen".