20422324121 has 2 divisors, whose sum is σ = 20422324122. Its totient is φ = 20422324120.

The previous prime is 20422324103. The next prime is 20422324123. The reversal of 20422324121 is 12142322402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17935905625 + 2486418496 = 133925^2 + 49864^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20422324121 is a prime.

Together with 20422324123, 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 (20422324123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10211162060 + 10211162061.

It is an arithmetic number, because the mean of its divisors is an integer number (10211162061).

Almost surely, 2^20422324121 is an apocalyptic number.

It is an amenable number.

20422324121 is a deficient number, since it is larger than the sum of its proper divisors (1).

20422324121 is an equidigital number, since it uses as much as digits as its factorization.

20422324121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 20422324121 its reverse (12142322402), we get a palindrome (32564646523).

The spelling of 20422324121 in words is "twenty billion, four hundred twenty-two million, three hundred twenty-four thousand, one hundred twenty-one".