12021201222112 has 96 divisors (see below), whose sum is σ = 24288280047360. Its totient is φ = 5854839045120.

The previous prime is 12021201221989. The next prime is 12021201222113. The reversal of 12021201222112 is 21122210212021.

It is a self number, because there is not a number n which added to its sum of digits gives 12021201222112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021201222113) 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, 680731939 + ... + 680749597.

It is an arithmetic number, because the mean of its divisors is an integer number (253002917160).

Almost surely, 2^{12021201222112} is an apocalyptic number.

It is an amenable number.

12021201222112 is an abundant number, since it is smaller than the sum of its proper divisors (12267078825248).

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

12021201222112 is a wasteful number, since it uses less digits than its factorization.

12021201222112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21336 (or 21328 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 12021201222112 its reverse (21122210212021), we get a palindrome (33143411434133).

The spelling of 12021201222112 in words is "twelve trillion, twenty-one billion, two hundred one million, two hundred twenty-two thousand, one hundred twelve".