20020023321 has 16 divisors (see below), whose sum is σ = 27542371584. Its totient is φ = 12928034304.

The previous prime is 20020023277. The next prime is 20020023371. The reversal of 20020023321 is 12332002002.

It is not a de Polignac number, because 20020023321 - 2²² = 20015829017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20020023321.

It is not an unprimeable number, because it can be changed into a prime (20020023371) 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 15 ways as a sum of consecutive naturals, for example, 718210 + ... + 745563.

It is an arithmetic number, because the mean of its divisors is an integer number (1721398224).

Almost surely, 2^20020023321 is an apocalyptic number.

It is an amenable number.

20020023321 is a deficient number, since it is larger than the sum of its proper divisors (7522348263).

20020023321 is a wasteful number, since it uses less digits than its factorization.

20020023321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1463920.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20020023321 its reverse (12332002002), we get a palindrome (32352025323).

The spelling of 20020023321 in words is "twenty billion, twenty million, twenty-three thousand, three hundred twenty-one".