20422006081 has 2 divisors, whose sum is σ = 20422006082. Its totient is φ = 20422006080.

The previous prime is 20422006063. The next prime is 20422006117. The reversal of 20422006081 is 18060022402.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20306250000 + 115756081 = 142500^2 + 10759^2 .

It is a cyclic number.

It is not a de Polignac number, because 20422006081 - 2¹¹ = 20422004033 is a prime.

It is a super-2 number, since 2×20422006081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20422006681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10211003040 + 10211003041.

It is an arithmetic number, because the mean of its divisors is an integer number (10211003041).

Almost surely, 2^20422006081 is an apocalyptic number.

It is an amenable number.

20422006081 is a deficient number, since it is larger than the sum of its proper divisors (1).

20422006081 is an equidigital number, since it uses as much as digits as its factorization.

20422006081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 20422006081 its reverse (18060022402), we get a palindrome (38482028483).

The spelling of 20422006081 in words is "twenty billion, four hundred twenty-two million, six thousand, eighty-one".