12422005065 has 12 divisors (see below), whose sum is σ = 21531475524. Its totient is φ = 6625069344.

The previous prime is 12422005027. The next prime is 12422005067. The reversal of 12422005065 is 56050022421.

It can be written as a sum of positive squares in 2 ways, for example, as 5603869881 + 6818135184 = 74859^2 + 82572^2 .

It is not a de Polignac number, because 12422005065 - 2¹⁹ = 12421480777 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12422005067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 138022234 + ... + 138022323.

It is an arithmetic number, because the mean of its divisors is an integer number (1794289627).

Almost surely, 2^12422005065 is an apocalyptic number.

12422005065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12422005065 is a deficient number, since it is larger than the sum of its proper divisors (9109470459).

12422005065 is a wasteful number, since it uses less digits than its factorization.

12422005065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276044568 (or 276044565 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 12422005065 its reverse (56050022421), we get a palindrome (68472027486).

The spelling of 12422005065 in words is "twelve billion, four hundred twenty-two million, five thousand, sixty-five".