21223202200 has 48 divisors (see below), whose sum is σ = 49398066000. Its totient is φ = 8479969920.

The previous prime is 21223202149. The next prime is 21223202201. The reversal of 21223202200 is 220232212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21223202201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 126066 + ... + 241534.

It is an arithmetic number, because the mean of its divisors is an integer number (1029126375).

Almost surely, 2^21223202200 is an apocalyptic number.

21223202200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21223202200 is an abundant number, since it is smaller than the sum of its proper divisors (28174863800).

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

21223202200 is a wasteful number, since it uses less digits than its factorization.

21223202200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116404 (or 116395 counting only the distinct ones).

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

Adding to 21223202200 its reverse (220232212), we get a palindrome (21443434412).

The spelling of 21223202200 in words is "twenty-one billion, two hundred twenty-three million, two hundred two thousand, two hundred".