12420264217 has 16 divisors (see below), whose sum is σ = 12996023040. Its totient is φ = 11854628352.

The previous prime is 12420264211. The next prime is 12420264221. The reversal of 12420264217 is 71246202421.

It is a de Polignac number, because none of the positive numbers 2^k-12420264217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12420264211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3100738 + ... + 3104740.

It is an arithmetic number, because the mean of its divisors is an integer number (812251440).

Almost surely, 2^12420264217 is an apocalyptic number.

It is an amenable number.

12420264217 is a deficient number, since it is larger than the sum of its proper divisors (575758823).

12420264217 is a wasteful number, since it uses less digits than its factorization.

12420264217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5232.

The product of its (nonzero) digits is 10752, while the sum is 31.

Adding to 12420264217 its reverse (71246202421), we get a palindrome (83666466638).

The spelling of 12420264217 in words is "twelve billion, four hundred twenty million, two hundred sixty-four thousand, two hundred seventeen".