12012202116 has 72 divisors (see below), whose sum is σ = 32046443520. Its totient is φ = 3783340224.

The previous prime is 12012202093. The next prime is 12012202117. The reversal of 12012202116 is 61120221021.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (12012202117) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 239046 + ... + 284898.

Almost surely, 2^12012202116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12012202116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16023221760).

12012202116 is an abundant number, since it is smaller than the sum of its proper divisors (20034241404).

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

12012202116 is a wasteful number, since it uses less digits than its factorization.

12012202116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46265 (or 46260 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 12012202116 its reverse (61120221021), we get a palindrome (73132423137).

The spelling of 12012202116 in words is "twelve billion, twelve million, two hundred two thousand, one hundred sixteen".