20021200200000 has 252 divisors, whose sum is σ = 71729359769340. Its totient is φ = 5338986240000.

The previous prime is 20021200199921. The next prime is 20021200200007. The reversal of 20021200200000 is 200212002.

It can be written as a sum of positive squares in 6 ways, for example, as 11154050293824 + 8867149906176 = 3339768^2 + 2977776^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021200200007) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3761445 + ... + 7361444.

It is an arithmetic number, because the mean of its divisors is an integer number (284640316545).

Almost surely, 2^{20021200200000} is an apocalyptic number.

20021200200000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20021200200000 is an abundant number, since it is smaller than the sum of its proper divisors (51708159569340).

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

20021200200000 is an equidigital number, since it uses as much as digits as its factorization.

20021200200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11122932 (or 11122899 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 20021200200000 its reverse (200212002), we get a palindrome (20021400412002).

20021200200000 divided by its reverse (200212002) gives a 5-th power (100000 = 10⁵).

The spelling of 20021200200000 in words is "twenty trillion, twenty-one billion, two hundred million, two hundred thousand".