12012021101020 has 24 divisors (see below), whose sum is σ = 25242774076800. Its totient is φ = 4801469437632.

The previous prime is 12012021101009. The next prime is 12012021101029. The reversal of 12012021101020 is 2010112021021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012021101029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 208658175 + ... + 208715734.

It is an arithmetic number, because the mean of its divisors is an integer number (1051782253200).

Almost surely, 2^{12012021101020} is an apocalyptic number.

12012021101020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12012021101020 is an abundant number, since it is smaller than the sum of its proper divisors (13230752975780).

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

12012021101020 is a wasteful number, since it uses less digits than its factorization.

12012021101020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417375357 (or 417375355 counting only the distinct ones).

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

Adding to 12012021101020 its reverse (2010112021021), we get a palindrome (14022133122041).

The spelling of 12012021101020 in words is "twelve trillion, twelve billion, twenty-one million, one hundred one thousand, twenty".