12120020211112 has 64 divisors (see below), whose sum is σ = 25068788236800. Its totient is φ = 5447674200000.

The previous prime is 12120020211097. The next prime is 12120020211133. The reversal of 12120020211112 is 21111202002121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1096437 + ... + 5044027.

It is an arithmetic number, because the mean of its divisors is an integer number (391699816200).

Almost surely, 2^{12120020211112} 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 12120020211112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12534394118400).

12120020211112 is an abundant number, since it is smaller than the sum of its proper divisors (12948768025688).

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

12120020211112 is a wasteful number, since it uses less digits than its factorization.

12120020211112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3947998 (or 3947994 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 12120020211112 its reverse (21111202002121), we get a palindrome (33231222213233).

The spelling of 12120020211112 in words is "twelve trillion, one hundred twenty billion, twenty million, two hundred eleven thousand, one hundred twelve".