20120212112112 has 480 divisors, whose sum is σ = 66579786763776. Its totient is φ = 5552789760000.

The previous prime is 20120212112087. The next prime is 20120212112153. The reversal of 20120212112112 is 21121121202102.

20120212112112 is a `hidden beast` number, since 201 + 20 + 21 + 211 + 211 + 2 = 666.

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

It is a congruent number.

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 95 ways as a sum of consecutive naturals, for example, 4601006758 + ... + 4601011130.

Almost surely, 2^{20120212112112} 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 20120212112112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33289893381888).

20120212112112 is an abundant number, since it is smaller than the sum of its proper divisors (46459574651664).

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

20120212112112 is a wasteful number, since it uses less digits than its factorization.

20120212112112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5589 (or 5580 counting only the distinct ones).

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

Adding to 20120212112112 its reverse (21121121202102), we get a palindrome (41241333314214).

The spelling of 20120212112112 in words is "twenty trillion, one hundred twenty billion, two hundred twelve million, one hundred twelve thousand, one hundred twelve".