12021000030000 has 300 divisors, whose sum is σ = 45272960452720. Its totient is φ = 2959015104000.

The previous prime is 12021000029999. The next prime is 12021000030049. The reversal of 12021000030000 is 3000012021.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (300).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 3967180 + ... + 6307179.

Almost surely, 2^{12021000030000} is an apocalyptic number.

12021000030000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021000030000 is an abundant number, since it is smaller than the sum of its proper divisors (33251960422720).

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

12021000030000 is a wasteful number, since it uses less digits than its factorization.

12021000030000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10274406 (or 10274382 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 12021000030000 its reverse (3000012021), we get a palindrome (12024000042021).

The spelling of 12021000030000 in words is "twelve trillion, twenty-one billion, thirty thousand".