12021045200 has 60 divisors (see below), whose sum is σ = 29876471340. Its totient is φ = 4642606080.

The previous prime is 12021045199. The next prime is 12021045209. The reversal of 12021045200 is 254012021.

It can be written as a sum of positive squares in 6 ways, for example, as 174028864 + 11847016336 = 13192^2 + 108844^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12021045209) 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, 506549 + ... + 529748.

It is an arithmetic number, because the mean of its divisors is an integer number (497941189).

Almost surely, 2^12021045200 is an apocalyptic number.

12021045200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12021045200 is an abundant number, since it is smaller than the sum of its proper divisors (17855426140).

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

12021045200 is a wasteful number, since it uses less digits than its factorization.

12021045200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1036344 (or 1036333 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

Adding to 12021045200 its reverse (254012021), we get a palindrome (12275057221).

The spelling of 12021045200 in words is "twelve billion, twenty-one million, forty-five thousand, two hundred".