12021222200 has 48 divisors (see below), whose sum is σ = 30099297480. Its totient is φ = 4438604160.

The previous prime is 12021222163. The next prime is 12021222217. The reversal of 12021222200 is 222212021.

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, 2309174 + ... + 2314373.

Almost surely, 2^12021222200 is an apocalyptic number.

12021222200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021222200 is an abundant number, since it is smaller than the sum of its proper divisors (18078075280).

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

12021222200 is a wasteful number, since it uses less digits than its factorization.

12021222200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4623576 (or 4623567 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 12021222200 its reverse (222212021), we get a palindrome (12243434221).

The spelling of 12021222200 in words is "twelve billion, twenty-one million, two hundred twenty-two thousand, two hundred".