20032421205 has 64 divisors (see below), whose sum is σ = 34672043520. Its totient is φ = 9846144000.

The previous prime is 20032421197. The next prime is 20032421207. The reversal of 20032421205 is 50212423002.

20032421205 = T₁₆₅₅₀ + T₁₆₅₅₁ + ... + T₁₆₆₉₄.

It is not a de Polignac number, because 20032421205 - 2³ = 20032421197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20032421207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5410855 + ... + 5414555.

It is an arithmetic number, because the mean of its divisors is an integer number (541750680).

Almost surely, 2^20032421205 is an apocalyptic number.

It is an amenable number.

20032421205 is a deficient number, since it is larger than the sum of its proper divisors (14639622315).

20032421205 is a wasteful number, since it uses less digits than its factorization.

20032421205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4302.

The product of its (nonzero) digits is 960, while the sum is 21.

Adding to 20032421205 its reverse (50212423002), we get a palindrome (70244844207).

The spelling of 20032421205 in words is "twenty billion, thirty-two million, four hundred twenty-one thousand, two hundred five".