20012221220200 has 192 divisors, whose sum is σ = 52677445392000. Its totient is φ = 7003635072000.

The previous prime is 20012221220183. The next prime is 20012221220203. The reversal of 20012221220200 is 202212221002.

It is not an unprimeable number, because it can be changed into a prime (20012221220203) 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, 19337506 + ... + 20346094.

It is an arithmetic number, because the mean of its divisors is an integer number (274361694750).

Almost surely, 2^{20012221220200} is an apocalyptic number.

20012221220200 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 20012221220200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26338722696000).

20012221220200 is an abundant number, since it is smaller than the sum of its proper divisors (32665224171800).

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

20012221220200 is a wasteful number, since it uses less digits than its factorization.

20012221220200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008956 (or 1008947 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20012221220200 its reverse (202212221002), we get a palindrome (20214433441202).

The spelling of 20012221220200 in words is "twenty trillion, twelve billion, two hundred twenty-one million, two hundred twenty thousand, two hundred".