12021200021112 has 16 divisors (see below), whose sum is σ = 30053000052840. Its totient is φ = 4007066673696.

The previous prime is 12021200021057. The next prime is 12021200021113. The reversal of 12021200021112 is 21112000212021.

It is a junction number, because it is equal to n+sod(n) for n = 12021200021091 and 12021200021100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021200021113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250441667083 + ... + 250441667130.

Almost surely, 2^{12021200021112} is an apocalyptic number.

12021200021112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12021200021112 is an abundant number, since it is smaller than the sum of its proper divisors (18031800031728).

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

12021200021112 is a wasteful number, since it uses less digits than its factorization.

12021200021112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500883334222 (or 500883334218 counting only the distinct ones).

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

Adding to 12021200021112 its reverse (21112000212021), we get a palindrome (33133200233133).

The spelling of 12021200021112 in words is "twelve trillion, twenty-one billion, two hundred million, twenty-one thousand, one hundred twelve".