20422132217 has 2 divisors, whose sum is σ = 20422132218. Its totient is φ = 20422132216.

The previous prime is 20422132177. The next prime is 20422132219. The reversal of 20422132217 is 71223122402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20246728681 + 175403536 = 142291^2 + 13244^2 .

It is a cyclic number.

It is not a de Polignac number, because 20422132217 - 2⁶ = 20422132153 is a prime.

Together with 20422132219, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20422132219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10211066108 + 10211066109.

It is an arithmetic number, because the mean of its divisors is an integer number (10211066109).

Almost surely, 2^20422132217 is an apocalyptic number.

It is an amenable number.

20422132217 is a deficient number, since it is larger than the sum of its proper divisors (1).

20422132217 is an equidigital number, since it uses as much as digits as its factorization.

20422132217 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 26.

Adding to 20422132217 its reverse (71223122402), we get a palindrome (91645254619).

The spelling of 20422132217 in words is "twenty billion, four hundred twenty-two million, one hundred thirty-two thousand, two hundred seventeen".