200021331321 has 48 divisors (see below), whose sum is σ = 337210922880. Its totient is φ = 111894393600.

The previous prime is 200021331317. The next prime is 200021331347. The reversal of 200021331321 is 123133120002.

It is not a de Polignac number, because 200021331321 - 2² = 200021331317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200021331294 and 200021331303.

It is not an unprimeable number, because it can be changed into a prime (200021331361) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 389706 + ... + 742908.

It is an arithmetic number, because the mean of its divisors is an integer number (7025227560).

Almost surely, 2^200021331321 is an apocalyptic number.

200021331321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

200021331321 is a deficient number, since it is larger than the sum of its proper divisors (137189591559).

200021331321 is a wasteful number, since it uses less digits than its factorization.

200021331321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353406 (or 353403 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 200021331321 its reverse (123133120002), we get a palindrome (323154451323).

The spelling of 200021331321 in words is "two hundred billion, twenty-one million, three hundred thirty-one thousand, three hundred twenty-one".