12012121112120 has 64 divisors (see below), whose sum is σ = 27124846691040. Its totient is φ = 4787504524800.

The previous prime is 12012121112077. The next prime is 12012121112143. The reversal of 12012121112120 is 2121112121021.

It is a super-2 number, since 2×12012121112120² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185853410 + ... + 185918030.

Almost surely, 2^{12012121112120} is an apocalyptic number.

12012121112120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12012121112120 is an abundant number, since it is smaller than the sum of its proper divisors (15112725578920).

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

12012121112120 is a wasteful number, since it uses less digits than its factorization.

12012121112120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81336 (or 81332 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 12012121112120 its reverse (2121112121021), we get a palindrome (14133233233141).

The spelling of 12012121112120 in words is "twelve trillion, twelve billion, one hundred twenty-one million, one hundred twelve thousand, one hundred twenty".