20430020211 has 16 divisors (see below), whose sum is σ = 27845301120. Its totient is φ = 13319769600.

The previous prime is 20430020063. The next prime is 20430020213. The reversal of 20430020211 is 11202003402.

It is not a de Polignac number, because 20430020211 - 2¹⁸ = 20429758067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20430020213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264865 + ... + 333186.

It is an arithmetic number, because the mean of its divisors is an integer number (1740331320).

Almost surely, 2^20430020211 is an apocalyptic number.

20430020211 is a deficient number, since it is larger than the sum of its proper divisors (7415280909).

20430020211 is a wasteful number, since it uses less digits than its factorization.

20430020211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 598306.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20430020211 its reverse (11202003402), we get a palindrome (31632023613).

The spelling of 20430020211 in words is "twenty billion, four hundred thirty million, twenty thousand, two hundred eleven".