200021121320 has 32 divisors (see below), whose sum is σ = 450061060320. Its totient is φ = 80006041920.

The previous prime is 200021121259. The next prime is 200021121371. The reversal of 200021121320 is 23121120002.

It is a happy number.

It is a super-2 number, since 2×200021121320² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 200021121295 and 200021121304.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1933715 + ... + 2034525.

It is an arithmetic number, because the mean of its divisors is an integer number (14064408135).

Almost surely, 2^200021121320 is an apocalyptic number.

200021121320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200021121320 is an abundant number, since it is smaller than the sum of its proper divisors (250039939000).

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

200021121320 is a wasteful number, since it uses less digits than its factorization.

200021121320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150425 (or 150421 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 200021121320 its reverse (23121120002), we get a palindrome (223142241322).

The spelling of 200021121320 in words is "two hundred billion, twenty-one million, one hundred twenty-one thousand, three hundred twenty".