22121210200 has 48 divisors (see below), whose sum is σ = 51824484360. Its totient is φ = 8780928000.

The previous prime is 22121210197. The next prime is 22121210213. The reversal of 22121210200 is 201212122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 395961 + ... + 448360.

Almost surely, 2^22121210200 is an apocalyptic number.

22121210200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22121210200 is an abundant number, since it is smaller than the sum of its proper divisors (29703274160).

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

22121210200 is a wasteful number, since it uses less digits than its factorization.

22121210200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844468 (or 844459 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 22121210200 its reverse (201212122), we get a palindrome (22322422322).

The spelling of 22121210200 in words is "twenty-two billion, one hundred twenty-one million, two hundred ten thousand, two hundred".