20321111411 has 4 divisors (see below), whose sum is σ = 20326857000. Its totient is φ = 20315365824.

The previous prime is 20321111407. The next prime is 20321111417. The reversal of 20321111411 is 11411112302.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20321111411 - 2² = 20321111407 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20321111411.

It is not an unprimeable number, because it can be changed into a prime (20321111417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2867486 + ... + 2874563.

It is an arithmetic number, because the mean of its divisors is an integer number (5081714250).

Almost surely, 2^20321111411 is an apocalyptic number.

20321111411 is a deficient number, since it is larger than the sum of its proper divisors (5745589).

20321111411 is an equidigital number, since it uses as much as digits as its factorization.

20321111411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5745588.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 20321111411 its reverse (11411112302), we get a palindrome (31732223713).

The spelling of 20321111411 in words is "twenty billion, three hundred twenty-one million, one hundred eleven thousand, four hundred eleven".