12011100112212 has 24 divisors (see below), whose sum is σ = 28026064246656. Its totient is φ = 4003676611008.

The previous prime is 12011100112159. The next prime is 12011100112217. The reversal of 12011100112212 is 21221100111021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 12011100112191 and 12011100112200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12011100112217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 725713 + ... + 4954680.

It is an arithmetic number, because the mean of its divisors is an integer number (1167752676944).

Almost surely, 2^{12011100112212} is an apocalyptic number.

12011100112212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12011100112212 is an abundant number, since it is smaller than the sum of its proper divisors (16014964134444).

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

12011100112212 is a wasteful number, since it uses less digits than its factorization.

12011100112212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5856607 (or 5856605 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 12011100112212 its reverse (21221100111021), we get a palindrome (33232200223233).

The spelling of 12011100112212 in words is "twelve trillion, eleven billion, one hundred million, one hundred twelve thousand, two hundred twelve".