21223322200 has 96 divisors (see below), whose sum is σ = 49869531360. Its totient is φ = 8399462400.

The previous prime is 21223322161. The next prime is 21223322249. The reversal of 21223322200 is 222332212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7602805 + ... + 7605595.

It is an arithmetic number, because the mean of its divisors is an integer number (519474285).

Almost surely, 2^21223322200 is an apocalyptic number.

21223322200 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 21223322200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24934765680).

21223322200 is an abundant number, since it is smaller than the sum of its proper divisors (28646209160).

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

21223322200 is a wasteful number, since it uses less digits than its factorization.

21223322200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3197 (or 3188 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 21223322200 its reverse (222332212), we get a palindrome (21445654412).

The spelling of 21223322200 in words is "twenty-one billion, two hundred twenty-three million, three hundred twenty-two thousand, two hundred".