20013023321 has 16 divisors (see below), whose sum is σ = 20626636800. Its totient is φ = 19406450448.

The previous prime is 20013023309. The next prime is 20013023333. The reversal of 20013023321 is 12332031002.

It is an interprime number because it is at equal distance from previous prime (20013023309) and next prime (20013023333).

It is a cyclic number.

It is not a de Polignac number, because 20013023321 - 2³⁰ = 18939281497 is a prime.

It is a super-2 number, since 2×20013023321² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20013023321.

It is not an unprimeable number, because it can be changed into a prime (20013023621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9183410 + ... + 9185588.

It is an arithmetic number, because the mean of its divisors is an integer number (1289164800).

Almost surely, 2^20013023321 is an apocalyptic number.

It is an amenable number.

20013023321 is a deficient number, since it is larger than the sum of its proper divisors (613613479).

20013023321 is a wasteful number, since it uses less digits than its factorization.

20013023321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3668.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20013023321 its reverse (12332031002), we get a palindrome (32345054323).

The spelling of 20013023321 in words is "twenty billion, thirteen million, twenty-three thousand, three hundred twenty-one".