20321111417 has 2 divisors, whose sum is σ = 20321111418. Its totient is φ = 20321111416.

The previous prime is 20321111407. The next prime is 20321111453. The reversal of 20321111417 is 71411112302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18467722816 + 1853388601 = 135896^2 + 43051^2 .

It is a cyclic number.

It is not a de Polignac number, because 20321111417 - 2¹⁰ = 20321110393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20321111392 and 20321111401.

It is not a weakly prime, because it can be changed into another prime (20321111407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10160555708 + 10160555709.

It is an arithmetic number, because the mean of its divisors is an integer number (10160555709).

Almost surely, 2^20321111417 is an apocalyptic number.

It is an amenable number.

20321111417 is a deficient number, since it is larger than the sum of its proper divisors (1).

20321111417 is an equidigital number, since it uses as much as digits as its factorization.

20321111417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 23.

Adding to 20321111417 its reverse (71411112302), we get a palindrome (91732223719).

The spelling of 20321111417 in words is "twenty billion, three hundred twenty-one million, one hundred eleven thousand, four hundred seventeen".