20320011211 has 16 divisors (see below), whose sum is σ = 20792825280. Its totient is φ = 19853084160.

The previous prime is 20320011193. The next prime is 20320011233. The reversal of 20320011211 is 11211002302.

It is a cyclic number.

It is not a de Polignac number, because 20320011211 - 2²¹ = 20317914059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20320011191 and 20320011200.

It is not an unprimeable number, because it can be changed into a prime (20320011251) 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, 4556895 + ... + 4561351.

It is an arithmetic number, because the mean of its divisors is an integer number (1299551580).

Almost surely, 2^20320011211 is an apocalyptic number.

20320011211 is a deficient number, since it is larger than the sum of its proper divisors (472814069).

20320011211 is a wasteful number, since it uses less digits than its factorization.

20320011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5094.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20320011211 its reverse (11211002302), we get a palindrome (31531013513).

The spelling of 20320011211 in words is "twenty billion, three hundred twenty million, eleven thousand, two hundred eleven".