12222021101112 has 96 divisors (see below), whose sum is σ = 33480248892480. Its totient is φ = 4027491628800.

The previous prime is 12222021101111. The next prime is 12222021101149. The reversal of 12222021101112 is 21110112022221.

12222021101112 is a `hidden beast` number, since 122 + 220 + 211 + 0 + 1 + 112 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222021101111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3461713 + ... + 6035519.

It is an arithmetic number, because the mean of its divisors is an integer number (348752592630).

Almost surely, 2^{12222021101112} is an apocalyptic number.

12222021101112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12222021101112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16740124446240).

12222021101112 is an abundant number, since it is smaller than the sum of its proper divisors (21258227791368).

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

12222021101112 is a wasteful number, since it uses less digits than its factorization.

12222021101112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2574573 (or 2574566 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 12222021101112 its reverse (21110112022221), we get a palindrome (33332133123333).

The spelling of 12222021101112 in words is "twelve trillion, two hundred twenty-two billion, twenty-one million, one hundred one thousand, one hundred twelve".