2021112200 has 48 divisors (see below), whose sum is σ = 4702066980. Its totient is φ = 807932160.

The previous prime is 2021112169. The next prime is 2021112209. The reversal of 2021112200 is 22111202.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 288388324 + 1732723876 = 16982^2 + 41626^2 .

It is not an unprimeable number, because it can be changed into a prime (2021112209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 557594 + ... + 561206.

Almost surely, 2^2021112200 is an apocalyptic number.

2021112200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021112200 is an abundant number, since it is smaller than the sum of its proper divisors (2680954780).

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

2021112200 is a wasteful number, since it uses less digits than its factorization.

2021112200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6426 (or 6417 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2021112200 is about 44956.7814684281. The cubic root of 2021112200 is about 1264.3388255398.

Adding to 2021112200 its reverse (22111202), we get a palindrome (2043223402).

The spelling of 2021112200 in words is "two billion, twenty-one million, one hundred twelve thousand, two hundred".