20201021012200 has 192 divisors, whose sum is σ = 56228745058560. Its totient is φ = 6599150469120.

The previous prime is 20201021012119. The next prime is 20201021012201. The reversal of 20201021012200 is 221012010202.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20201021012201) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7054854 + ... + 9495946.

It is an arithmetic number, because the mean of its divisors is an integer number (292858047180).

Almost surely, 2^{20201021012200} is an apocalyptic number.

20201021012200 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 20201021012200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28114372529280).

20201021012200 is an abundant number, since it is smaller than the sum of its proper divisors (36027724046360).

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

20201021012200 is a wasteful number, since it uses less digits than its factorization.

20201021012200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2441396 (or 2441387 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20201021012200 its reverse (221012010202), we get a palindrome (20422033022402).

The spelling of 20201021012200 in words is "twenty trillion, two hundred one billion, twenty-one million, twelve thousand, two hundred".