21222203020200 has 1728 divisors, whose sum is σ = 93517035955200. Its totient is φ = 4215612211200.

The previous prime is 21222203020111. The next prime is 21222203020223. The reversal of 21222203020200 is 202030222212.

21222203020200 is a `hidden beast` number, since 2 + 122 + 220 + 302 + 0 + 20 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 431 ways as a sum of consecutive naturals, for example, 2442417456 + ... + 2442426144.

Almost surely, 2^{21222203020200} is an apocalyptic number.

21222203020200 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 21222203020200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46758517977600).

21222203020200 is an abundant number, since it is smaller than the sum of its proper divisors (72294832935000).

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

21222203020200 is a wasteful number, since it uses less digits than its factorization.

21222203020200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8812 (or 8787 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 21222203020200 its reverse (202030222212), we get a palindrome (21424233242412).

The spelling of 21222203020200 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred three million, twenty thousand, two hundred".