12021312300000 has 144 divisors (see below), whose sum is σ = 39442407493104. Its totient is φ = 3205683200000.

The previous prime is 12021312299993. The next prime is 12021312300031. The reversal of 12021312300000 is 321312021.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 23 ways as a sum of consecutive naturals, for example, 19735521 + ... + 20335520.

It is an arithmetic number, because the mean of its divisors is an integer number (273905607591).

Almost surely, 2^{12021312300000} is an apocalyptic number.

12021312300000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021312300000 is an abundant number, since it is smaller than the sum of its proper divisors (27421095193104).

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

12021312300000 is an frugal number, since it uses more digits than its factorization.

12021312300000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40071079 (or 40071051 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12021312300000 its reverse (321312021), we get a palindrome (12021633612021).

The spelling of 12021312300000 in words is "twelve trillion, twenty-one billion, three hundred twelve million, three hundred thousand".