12212112012 has 12 divisors (see below), whose sum is σ = 28494928056. Its totient is φ = 4070704000.

The previous prime is 12212112001. The next prime is 12212112013. The reversal of 12212112012 is 21021121221.

12212112012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 12212111982 and 12212112000.

It is not an unprimeable number, because it can be changed into a prime (12212112013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 508837989 + ... + 508838012.

It is an arithmetic number, because the mean of its divisors is an integer number (2374577338).

Almost surely, 2^12212112012 is an apocalyptic number.

12212112012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12212112012 is an abundant number, since it is smaller than the sum of its proper divisors (16282816044).

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

12212112012 is a wasteful number, since it uses less digits than its factorization.

12212112012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017676008 (or 1017676006 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12212112012 its reverse (21021121221), we get a palindrome (33233233233).

The spelling of 12212112012 in words is "twelve billion, two hundred twelve million, one hundred twelve thousand, twelve".