2021123320200 has 144 divisors (see below), whose sum is σ = 6971054852580. Its totient is φ = 524399546880.

The previous prime is 2021123320189. The next prime is 2021123320213. The reversal of 2021123320200 is 20233211202.

2021123320200 is a `hidden beast` number, since 2 + 0 + 21 + 123 + 320 + 200 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 1717352588484 + 303770731716 = 1310478^2 + 551154^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 15106999 + ... + 15240198.

Almost surely, 2^{2021123320200} is an apocalyptic number.

2021123320200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2021123320200 is an abundant number, since it is smaller than the sum of its proper divisors (4949931532380).

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

2021123320200 is a wasteful number, since it uses less digits than its factorization.

2021123320200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30347256 (or 30347244 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 2021123320200 its reverse (20233211202), we get a palindrome (2041356531402).

The spelling of 2021123320200 in words is "two trillion, twenty-one billion, one hundred twenty-three million, three hundred twenty thousand, two hundred".