21020201202000 has 1920 divisors, whose sum is σ = 95125714564608. Its totient is φ = 3922587648000.

The previous prime is 21020201201929. The next prime is 21020201202001. The reversal of 21020201202000 is 20210202012.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21020201202001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 1555547244 + ... + 1555560756.

Almost surely, 2^{21020201202000} is an apocalyptic number.

21020201202000 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 21020201202000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47562857282304).

21020201202000 is an abundant number, since it is smaller than the sum of its proper divisors (74105513362608).

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

21020201202000 is a wasteful number, since it uses less digits than its factorization.

21020201202000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13614 (or 13591 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 21020201202000 its reverse (20210202012), we get a palindrome (21040411404012).

The spelling of 21020201202000 in words is "twenty-one trillion, twenty billion, two hundred one million, two hundred two thousand".