20322121117 has 2 divisors, whose sum is σ = 20322121118. Its totient is φ = 20322121116.

The previous prime is 20322121111. The next prime is 20322121153. The reversal of 20322121117 is 71112122302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19244903076 + 1077218041 = 138726^2 + 32821^2 .

It is a cyclic number.

It is not a de Polignac number, because 20322121117 - 2¹⁵ = 20322088349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20322121111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161060558 + 10161060559.

It is an arithmetic number, because the mean of its divisors is an integer number (10161060559).

Almost surely, 2^20322121117 is an apocalyptic number.

It is an amenable number.

20322121117 is a deficient number, since it is larger than the sum of its proper divisors (1).

20322121117 is an equidigital number, since it uses as much as digits as its factorization.

20322121117 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 22.

Adding to 20322121117 its reverse (71112122302), we get a palindrome (91434243419).

The spelling of 20322121117 in words is "twenty billion, three hundred twenty-two million, one hundred twenty-one thousand, one hundred seventeen".