12012210012222 has 96 divisors (see below), whose sum is σ = 30115253855232. Its totient is φ = 3389317002432.

The previous prime is 12012210012199. The next prime is 12012210012233. The reversal of 12012210012222 is 22221001221021.

It is a happy number.

12012210012222 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×12012210012222² (a number of 27 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 12012210012195 and 12012210012204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 25356028 + ... + 25825424.

It is an arithmetic number, because the mean of its divisors is an integer number (313700560992).

Almost surely, 2^{12012210012222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12012210012222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15057626927616).

12012210012222 is an abundant number, since it is smaller than the sum of its proper divisors (18103043843010).

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

12012210012222 is a wasteful number, since it uses less digits than its factorization.

12012210012222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471942 (or 471939 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12012210012222 its reverse (22221001221021), we get a palindrome (34233211233243).

The spelling of 12012210012222 in words is "twelve trillion, twelve billion, two hundred ten million, twelve thousand, two hundred twenty-two".