12021322200 has 384 divisors, whose sum is σ = 41357977920. Its totient is φ = 2875392000.

The previous prime is 12021322199. The next prime is 12021322223. The reversal of 12021322200 is 222312021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12021322200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 20001900 + ... + 20002500.

Almost surely, 2^12021322200 is an apocalyptic number.

12021322200 is a gapful number since it is divisible by the number (10) 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 12021322200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20678988960).

12021322200 is an abundant number, since it is smaller than the sum of its proper divisors (29336655720).

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

12021322200 is a wasteful number, since it uses less digits than its factorization.

12021322200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727 (or 718 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 12021322200 its reverse (222312021), we get a palindrome (12243634221).

The spelling of 12021322200 in words is "twelve billion, twenty-one million, three hundred twenty-two thousand, two hundred".