12022112221212 has 48 divisors (see below), whose sum is σ = 30659808033792. Its totient is φ = 3649977143040.

The previous prime is 12022112221193. The next prime is 12022112221213. The reversal of 12022112221212 is 21212221122021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12022112221213) 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, 950508558 + ... + 950521205.

It is an arithmetic number, because the mean of its divisors is an integer number (638746000704).

Almost surely, 2^{12022112221212} is an apocalyptic number.

12022112221212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12022112221212 is an abundant number, since it is smaller than the sum of its proper divisors (18637695812580).

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

12022112221212 is a wasteful number, since it uses less digits than its factorization.

12022112221212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1901029818 (or 1901029816 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 12022112221212 its reverse (21212221122021), we get a palindrome (33234333343233).

The spelling of 12022112221212 in words is "twelve trillion, twenty-two billion, one hundred twelve million, two hundred twenty-one thousand, two hundred twelve".