20020301321 has 8 divisors (see below), whose sum is σ = 20368265544. Its totient is φ = 19672974720.

The previous prime is 20020301317. The next prime is 20020301339. The reversal of 20020301321 is 12310302002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5125696 + 20015175625 = 2264^2 + 141475^2 .

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 20020301321 - 2² = 20020301317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20020301296 and 20020301305.

It is not an unprimeable number, because it can be changed into a prime (20020301381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95846 + ... + 221871.

It is an arithmetic number, because the mean of its divisors is an integer number (2546033193).

Almost surely, 2^20020301321 is an apocalyptic number.

It is an amenable number.

20020301321 is a deficient number, since it is larger than the sum of its proper divisors (347964223).

20020301321 is a wasteful number, since it uses less digits than its factorization.

20020301321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318811.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20020301321 its reverse (12310302002), we get a palindrome (32330603323).

The spelling of 20020301321 in words is "twenty billion, twenty million, three hundred one thousand, three hundred twenty-one".