200020021220 has 12 divisors (see below), whose sum is σ = 420042044604. Its totient is φ = 80008008480.

The previous prime is 200020021199. The next prime is 200020021261. The reversal of 200020021220 is 22120020002.

200020021220 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 97727512996 + 102292508224 = 312614^2 + 319832^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5000500511 + ... + 5000500550.

It is an arithmetic number, because the mean of its divisors is an integer number (35003503717).

Almost surely, 2^200020021220 is an apocalyptic number.

200020021220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200020021220 is an abundant number, since it is smaller than the sum of its proper divisors (220022023384).

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

200020021220 is a wasteful number, since it uses less digits than its factorization.

200020021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10001001070 (or 10001001068 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 200020021220 its reverse (22120020002), we get a palindrome (222140041222).

The spelling of 200020021220 in words is "two hundred billion, twenty million, twenty-one thousand, two hundred twenty".