12120217115 has 8 divisors (see below), whose sum is σ = 14545086000. Its totient is φ = 9695623392.

The previous prime is 12120217007. The next prime is 12120217127. The reversal of 12120217115 is 51171202121.

It is a happy number.

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 12120217115 - 2⁸ = 12120216859 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45332 + ... + 162158.

It is an arithmetic number, because the mean of its divisors is an integer number (1818135750).

Almost surely, 2^12120217115 is an apocalyptic number.

12120217115 is a deficient number, since it is larger than the sum of its proper divisors (2424868885).

12120217115 is a wasteful number, since it uses less digits than its factorization.

12120217115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137581.

The product of its (nonzero) digits is 280, while the sum is 23.

Adding to 12120217115 its reverse (51171202121), we get a palindrome (63291419236).

The spelling of 12120217115 in words is "twelve billion, one hundred twenty million, two hundred seventeen thousand, one hundred fifteen".