12020112111100 has 144 divisors (see below), whose sum is σ = 27955697283360. Its totient is φ = 4470134169600.

The previous prime is 12020112111097. The next prime is 12020112111113. The reversal of 12020112111100 is 111121102021.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 61236312 + ... + 61432288.

It is an arithmetic number, because the mean of its divisors is an integer number (194136786690).

Almost surely, 2^{12020112111100} is an apocalyptic number.

12020112111100 is a gapful number since it is divisible by the number (10) 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 12020112111100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13977848641680).

12020112111100 is an abundant number, since it is smaller than the sum of its proper divisors (15935585172260).

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

12020112111100 is a wasteful number, since it uses less digits than its factorization.

12020112111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196448 (or 196441 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 12020112111100 its reverse (111121102021), we get a palindrome (12131233213121).

The spelling of 12020112111100 in words is "twelve trillion, twenty billion, one hundred twelve million, one hundred eleven thousand, one hundred".