12222001112112 has 160 divisors (see below), whose sum is σ = 38297715456000. Its totient is φ = 3701042876160.

The previous prime is 12222001112107. The next prime is 12222001112131. The reversal of 12222001112112 is 21121110022221.

12222001112112 is a `hidden beast` number, since 122 + 220 + 0 + 111 + 211 + 2 = 666.

It is a super-2 number, since 2×12222001112112² (a number of 27 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5890689 + ... + 7690527.

It is an arithmetic number, because the mean of its divisors is an integer number (239360721600).

Almost surely, 2^{12222001112112} is an apocalyptic number.

12222001112112 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 12222001112112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19148857728000).

12222001112112 is an abundant number, since it is smaller than the sum of its proper divisors (26075714343888).

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

12222001112112 is a wasteful number, since it uses less digits than its factorization.

12222001112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1801296 (or 1801284 counting only the distinct ones).

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

Adding to 12222001112112 its reverse (21121110022221), we get a palindrome (33343111134333).

The spelling of 12222001112112 in words is "twelve trillion, two hundred twenty-two billion, one million, one hundred twelve thousand, one hundred twelve".