20422042132417 has 2 divisors, whose sum is σ = 20422042132418. Its totient is φ = 20422042132416.

The previous prime is 20422042132403. The next prime is 20422042132441. The reversal of 20422042132417 is 71423124022402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19229663306896 + 1192378825521 = 4385164^2 + 1091961^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20422042132417 is a prime.

It is not a weakly prime, because it can be changed into another prime (20422042132717) 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 as a sum of consecutive naturals, namely, 10211021066208 + 10211021066209.

It is an arithmetic number, because the mean of its divisors is an integer number (10211021066209).

Almost surely, 2^{20422042132417} is an apocalyptic number.

It is an amenable number.

20422042132417 is a deficient number, since it is larger than the sum of its proper divisors (1).

20422042132417 is an equidigital number, since it uses as much as digits as its factorization.

20422042132417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43008, while the sum is 34.

Adding to 20422042132417 its reverse (71423124022402), we get a palindrome (91845166154819).

The spelling of 20422042132417 in words is "twenty trillion, four hundred twenty-two billion, forty-two million, one hundred thirty-two thousand, four hundred seventeen".