20004424321 has 8 divisors (see below), whose sum is σ = 22863060864. Its totient is φ = 17146003200.

The previous prime is 20004424313. The next prime is 20004424327. The reversal of 20004424321 is 12342440002.

It is a happy number.

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 20004424321 - 2³ = 20004424313 is a prime.

It is a super-2 number, since 2×20004424321² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20004424292 and 20004424301.

It is not an unprimeable number, because it can be changed into a prime (20004424327) 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, 301281 + ... + 361633.

It is an arithmetic number, because the mean of its divisors is an integer number (2857882608).

Almost surely, 2^20004424321 is an apocalyptic number.

It is an amenable number.

20004424321 is a deficient number, since it is larger than the sum of its proper divisors (2858636543).

20004424321 is an equidigital number, since it uses as much as digits as its factorization.

20004424321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107711.

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 20004424321 its reverse (12342440002), we get a palindrome (32346864323).

The spelling of 20004424321 in words is "twenty billion, four million, four hundred twenty-four thousand, three hundred twenty-one".