20334000421 has 4 divisors (see below), whose sum is σ = 23238857632. Its totient is φ = 17429143212.

The previous prime is 20334000413. The next prime is 20334000451. The reversal of 20334000421 is 12400043302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20334000421 - 2³ = 20334000413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20334000451) 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 3 ways as a sum of consecutive naturals, for example, 1452428595 + ... + 1452428608.

It is an arithmetic number, because the mean of its divisors is an integer number (5809714408).

Almost surely, 2^20334000421 is an apocalyptic number.

It is an amenable number.

20334000421 is a deficient number, since it is larger than the sum of its proper divisors (2904857211).

20334000421 is an equidigital number, since it uses as much as digits as its factorization.

20334000421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2904857210.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 20334000421 its reverse (12400043302), we get a palindrome (32734043723).

The spelling of 20334000421 in words is "twenty billion, three hundred thirty-four million, four hundred twenty-one", and thus it is an aban number.