12011220168 has 64 divisors (see below), whose sum is σ = 30433233600. Its totient is φ = 3949854720.

The previous prime is 12011220167. The next prime is 12011220187. The reversal of 12011220168 is 86102211021.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (12011220161) 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, 1527928 + ... + 1535768.

It is an arithmetic number, because the mean of its divisors is an integer number (475519275).

Almost surely, 2^12011220168 is an apocalyptic number.

It is an amenable number.

12011220168 is an abundant number, since it is smaller than the sum of its proper divisors (18422013432).

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

12011220168 is a wasteful number, since it uses less digits than its factorization.

12011220168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8702 (or 8698 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 24.

Adding to 12011220168 its reverse (86102211021), we get a palindrome (98113431189).

The spelling of 12011220168 in words is "twelve billion, eleven million, two hundred twenty thousand, one hundred sixty-eight".