12212115617 has 8 divisors (see below), whose sum is σ = 13153185024. Its totient is φ = 11271285648.

The previous prime is 12212115611. The next prime is 12212115653. The reversal of 12212115617 is 71651121221.

12212115617 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12212115617 - 2¹² = 12212111521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12212115617.

It is not an unprimeable number, because it can be changed into a prime (12212115611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54128 + ... + 165390.

It is an arithmetic number, because the mean of its divisors is an integer number (1644148128).

Almost surely, 2^12212115617 is an apocalyptic number.

It is an amenable number.

12212115617 is a deficient number, since it is larger than the sum of its proper divisors (941069407).

12212115617 is a wasteful number, since it uses less digits than its factorization.

12212115617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119719.

The product of its digits is 1680, while the sum is 29.

Adding to 12212115617 its reverse (71651121221), we get a palindrome (83863236838).

The spelling of 12212115617 in words is "twelve billion, two hundred twelve million, one hundred fifteen thousand, six hundred seventeen".