2021047920000 has 480 divisors, whose sum is σ = 7316556390000. Its totient is φ = 535300608000.

The previous prime is 2021047919981. The next prime is 2021047920007. The reversal of 2021047920000 is 297401202.

It is a tau number, because it is divible by the number of its divisors (480).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021047920007) by changing a digit.

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 59 ways as a sum of consecutive naturals, for example, 107270581 + ... + 107289419.

Almost surely, 2^{2021047920000} is an apocalyptic number.

2021047920000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021047920000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3658278195000).

2021047920000 is an abundant number, since it is smaller than the sum of its proper divisors (5295508470000).

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

2021047920000 is a wasteful number, since it uses less digits than its factorization.

2021047920000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19028 (or 18998 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The spelling of 2021047920000 in words is "two trillion, twenty-one billion, forty-seven million, nine hundred twenty thousand".