12111121212120 has 96 divisors (see below), whose sum is σ = 44984164511520. Its totient is φ = 2768256276480.

The previous prime is 12111121212089. The next prime is 12111121212217. The reversal of 12111121212120 is 2121212111121.

It is a happy number.

12111121212120 is a `hidden beast` number, since 1 + 211 + 1 + 121 + 212 + 120 = 666.

12111121212120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 12111121212093 and 12111121212102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2402997721 + ... + 2403002760.

It is an arithmetic number, because the mean of its divisors is an integer number (468585046995).

Almost surely, 2^{12111121212120} is an apocalyptic number.

12111121212120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111121212120 is an abundant number, since it is smaller than the sum of its proper divisors (32873043299400).

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

12111121212120 is a wasteful number, since it uses less digits than its factorization.

12111121212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4806000505 (or 4806000498 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 12111121212120 its reverse (2121212111121), we get a palindrome (14232333323241).

The spelling of 12111121212120 in words is "twelve trillion, one hundred eleven billion, one hundred twenty-one million, two hundred twelve thousand, one hundred twenty".