12012012121100 has 72 divisors (see below), whose sum is σ = 27600350027040. Its totient is φ = 4522007761920.

The previous prime is 12012012121099. The next prime is 12012012121121. The reversal of 12012012121100 is 112121021021.

12012012121100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 54420761 + ... + 54641039.

It is an arithmetic number, because the mean of its divisors is an integer number (383338194820).

Almost surely, 2^{12012012121100} is an apocalyptic number.

12012012121100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12012012121100 is an abundant number, since it is smaller than the sum of its proper divisors (15588337905940).

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

12012012121100 is a wasteful number, since it uses less digits than its factorization.

12012012121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252387 (or 252380 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12012012121100 its reverse (112121021021), we get a palindrome (12124133142121).

The spelling of 12012012121100 in words is "twelve trillion, twelve billion, twelve million, one hundred twenty-one thousand, one hundred".