12012102121000 has 64 divisors (see below), whose sum is σ = 28113966953280. Its totient is φ = 4803875380800.

The previous prime is 12012102120989. The next prime is 12012102121003. The reversal of 12012102121000 is 12120121021.

It is not an unprimeable number, because it can be changed into a prime (12012102121003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3782659 + ... + 6191341.

It is an arithmetic number, because the mean of its divisors is an integer number (439280733645).

Almost surely, 2^{12012102121000} is an apocalyptic number.

12012102121000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12012102121000 is an abundant number, since it is smaller than the sum of its proper divisors (16101864832280).

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

12012102121000 is a wasteful number, since it uses less digits than its factorization.

12012102121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2413691 (or 2413677 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 12012102121000 its reverse (12120121021), we get a palindrome (12024222242021).

The spelling of 12012102121000 in words is "twelve trillion, twelve billion, one hundred two million, one hundred twenty-one thousand".