12111210202120 has 64 divisors (see below), whose sum is σ = 27780279203520. Its totient is φ = 4750356559104.

The previous prime is 12111210202111. The next prime is 12111210202213. The reversal of 12111210202120 is 2120201211121.

It is a junction number, because it is equal to n+sod(n) for n = 12111210202094 and 12111210202103.

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 15 ways as a sum of consecutive naturals, for example, 2068599 + ... + 5338681.

It is an arithmetic number, because the mean of its divisors is an integer number (434066862555).

Almost surely, 2^{12111210202120} is an apocalyptic number.

12111210202120 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 12111210202120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13890139601760).

12111210202120 is an abundant number, since it is smaller than the sum of its proper divisors (15669069001400).

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

12111210202120 is a wasteful number, since it uses less digits than its factorization.

12111210202120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3271894 (or 3271890 counting only the distinct ones).

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

Adding to 12111210202120 its reverse (2120201211121), we get a palindrome (14231411413241).

The spelling of 12111210202120 in words is "twelve trillion, one hundred eleven billion, two hundred ten million, two hundred two thousand, one hundred twenty".