20012012321112 has 192 divisors, whose sum is σ = 64177778995200. Its totient is φ = 5512704341760.

The previous prime is 20012012321111. The next prime is 20012012321141. The reversal of 20012012321112 is 21112321021002.

20012012321112 is a `hidden beast` number, since 200 + 1 + 20 + 12 + 321 + 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 (20012012321111) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1822093 + ... + 6583619.

It is an arithmetic number, because the mean of its divisors is an integer number (334259265600).

Almost surely, 2^{20012012321112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20012012321112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32088889497600).

20012012321112 is an abundant number, since it is smaller than the sum of its proper divisors (44165766674088).

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

20012012321112 is a wasteful number, since it uses less digits than its factorization.

20012012321112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4761846 (or 4761839 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 20012012321112 its reverse (21112321021002), we get a palindrome (41124333342114).

The spelling of 20012012321112 in words is "twenty trillion, twelve billion, twelve million, three hundred twenty-one thousand, one hundred twelve".