12020021200 has 60 divisors (see below), whose sum is σ = 31503394368. Its totient is φ = 4370915200.

The previous prime is 12020021179. The next prime is 12020021201. The reversal of 12020021200 is 212002021.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020021201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1361512 + ... + 1370311.

Almost surely, 2^12020021200 is an apocalyptic number.

12020021200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12020021200 is an abundant number, since it is smaller than the sum of its proper divisors (19483373168).

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

12020021200 is a wasteful number, since it uses less digits than its factorization.

12020021200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2731852 (or 2731841 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 12020021200 its reverse (212002021), we get a palindrome (12232023221).

The spelling of 12020021200 in words is "twelve billion, twenty million, twenty-one thousand, two hundred".