20021333321 has 8 divisors (see below), whose sum is σ = 22117929600. Its totient is φ = 17970816240.

The previous prime is 20021333309. The next prime is 20021333327. The reversal of 20021333321 is 12333312002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20021333321 - 2⁶ = 20021333257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20021333293 and 20021333302.

It is not an unprimeable number, because it can be changed into a prime (20021333327) 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 7 ways as a sum of consecutive naturals, for example, 11518886 + ... + 11520623.

It is an arithmetic number, because the mean of its divisors is an integer number (2764741200).

Almost surely, 2^20021333321 is an apocalyptic number.

It is an amenable number.

20021333321 is a deficient number, since it is larger than the sum of its proper divisors (2096596279).

20021333321 is a wasteful number, since it uses less digits than its factorization.

20021333321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23039599.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20021333321 its reverse (12333312002), we get a palindrome (32354645323).

The spelling of 20021333321 in words is "twenty billion, twenty-one million, three hundred thirty-three thousand, three hundred twenty-one".