12162151218 has 128 divisors (see below), whose sum is σ = 30088396800. Its totient is φ = 3199839552.

The previous prime is 12162151217. The next prime is 12162151231. The reversal of 12162151218 is 81215126121.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12162151217) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 8200305 + ... + 8201787.

It is an arithmetic number, because the mean of its divisors is an integer number (235065600).

Almost surely, 2^12162151218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12162151218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15044198400).

12162151218 is an abundant number, since it is smaller than the sum of its proper divisors (17926245582).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12162151218 is a wasteful number, since it uses less digits than its factorization.

12162151218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796.

The product of its digits is 1920, while the sum is 30.

Adding to 12162151218 its reverse (81215126121), we get a palindrome (93377277339).

The spelling of 12162151218 in words is "twelve billion, one hundred sixty-two million, one hundred fifty-one thousand, two hundred eighteen".