20200021021000 has 128 divisors (see below), whose sum is σ = 49002721372800. Its totient is φ = 7784676883200.

The previous prime is 20200021020989. The next prime is 20200021021021. The reversal of 20200021021000 is 12012000202.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12797227 + ... + 14288773.

It is an arithmetic number, because the mean of its divisors is an integer number (382833760725).

Almost surely, 2^{20200021021000} is an apocalyptic number.

20200021021000 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 20200021021000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24501360686400).

20200021021000 is an abundant number, since it is smaller than the sum of its proper divisors (28802700351800).

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

20200021021000 is a wasteful number, since it uses less digits than its factorization.

20200021021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1492064 (or 1492050 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20200021021000 its reverse (12012000202), we get a palindrome (20212033021202).

The spelling of 20200021021000 in words is "twenty trillion, two hundred billion, twenty-one million, twenty-one thousand".