22121222200 has 96 divisors (see below), whose sum is σ = 64122860160. Its totient is φ = 6894921600.

The previous prime is 22121222191. The next prime is 22121222231. The reversal of 22121222200 is 222212122.

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, 702822 + ... + 733621.

It is an arithmetic number, because the mean of its divisors is an integer number (667946460).

Almost surely, 2^22121222200 is an apocalyptic number.

22121222200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22121222200 is an abundant number, since it is smaller than the sum of its proper divisors (42001637960).

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

22121222200 is a wasteful number, since it uses less digits than its factorization.

22121222200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1436477 (or 1436468 counting only the distinct ones).

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

Adding to 22121222200 its reverse (222212122), we get a palindrome (22343434322).

The spelling of 22121222200 in words is "twenty-two billion, one hundred twenty-one million, two hundred twenty-two thousand, two hundred".