20021120200200 has 288 divisors, whose sum is σ = 72658491523200. Its totient is φ = 4547106869760.

The previous prime is 20021120200187. The next prime is 20021120200217. The reversal of 20021120200200 is 200202112002.

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

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2447041 + ... + 6784559.

It is an arithmetic number, because the mean of its divisors is an integer number (252286428900).

Almost surely, 2^{20021120200200} is an apocalyptic number.

20021120200200 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 20021120200200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36329245761600).

20021120200200 is an abundant number, since it is smaller than the sum of its proper divisors (52637371323000).

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

20021120200200 is a wasteful number, since it uses less digits than its factorization.

20021120200200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4337709 (or 4337693 counting only the distinct ones).

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

Adding to 20021120200200 its reverse (200202112002), we get a palindrome (20221322312202).

The spelling of 20021120200200 in words is "twenty trillion, twenty-one billion, one hundred twenty million, two hundred thousand, two hundred".