21222300020200 has 24 divisors (see below), whose sum is σ = 49341847547430. Its totient is φ = 8488920008000.

The previous prime is 21222300020197. The next prime is 21222300020231. The reversal of 21222300020200 is 202000322212.

It can be written as a sum of positive squares in 3 ways, for example, as 18965833380484 + 2256466639716 = 4354978^2 + 1502154^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53055749851 + ... + 53055750250.

Almost surely, 2^{21222300020200} is an apocalyptic number.

21222300020200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21222300020200 is an abundant number, since it is smaller than the sum of its proper divisors (28119547527230).

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

21222300020200 is a wasteful number, since it uses less digits than its factorization.

21222300020200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106111500117 (or 106111500108 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 21222300020200 its reverse (202000322212), we get a palindrome (21424300342412).

The spelling of 21222300020200 in words is "twenty-one trillion, two hundred twenty-two billion, three hundred million, twenty thousand, two hundred".