20083321 has 4 divisors (see below), whose sum is σ = 20128500. Its totient is φ = 20038144.

The previous prime is 20083309. The next prime is 20083333. The reversal of 20083321 is 12338002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (20083309) and next prime (20083333).

It can be written as a sum of positive squares in 2 ways, for example, as 13957696 + 6125625 = 3736^2 + 2475^2 .

It is a cyclic number.

It is not a de Polignac number, because 20083321 - 2⁵ = 20083289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20083391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21916 + ... + 22813.

It is an arithmetic number, because the mean of its divisors is an integer number (5032125).

Almost surely, 2^20083321 is an apocalyptic number.

It is an amenable number.

20083321 is a deficient number, since it is larger than the sum of its proper divisors (45179).

20083321 is an equidigital number, since it uses as much as digits as its factorization.

20083321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45178.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 20083321 is about 4481.4418438712. The cubic root of 20083321 is about 271.8181860585.

It can be divided in two parts, 2008 and 3321, that added together give a square (5329 = 73²).

The spelling of 20083321 in words is "twenty million, eighty-three thousand, three hundred twenty-one".