20020002321 has 16 divisors (see below), whose sum is σ = 29126055168. Its totient is φ = 12130813200.

The previous prime is 20020002313. The next prime is 20020002323. The reversal of 20020002321 is 12320002002.

It is not a de Polignac number, because 20020002321 - 2³ = 20020002313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20020002297 and 20020002306.

It is not an unprimeable number, because it can be changed into a prime (20020002323) 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, 104830 + ... + 225896.

It is an arithmetic number, because the mean of its divisors is an integer number (1820378448).

Almost surely, 2^20020002321 is an apocalyptic number.

It is an amenable number.

20020002321 is a deficient number, since it is larger than the sum of its proper divisors (9106052847).

20020002321 is a wasteful number, since it uses less digits than its factorization.

20020002321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126092.

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 20020002321 its reverse (12320002002), we get a palindrome (32340004323).

The spelling of 20020002321 in words is "twenty billion, twenty million, two thousand, three hundred twenty-one".