20422995769081 has 2 divisors, whose sum is σ = 20422995769082. Its totient is φ = 20422995769080.

The previous prime is 20422995769067. The next prime is 20422995769091. The reversal of 20422995769081 is 18096759922402.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16912319026681 + 3510676742400 = 4112459^2 + 1873680^2 .

It is a cyclic number.

It is not a de Polignac number, because 20422995769081 - 2³⁵ = 20388636030713 is a prime.

It is a super-2 number, since 2×20422995769081² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20422995769091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10211497884540 + 10211497884541.

It is an arithmetic number, because the mean of its divisors is an integer number (10211497884541).

Almost surely, 2^{20422995769081} is an apocalyptic number.

It is an amenable number.

20422995769081 is a deficient number, since it is larger than the sum of its proper divisors (1).

20422995769081 is an equidigital number, since it uses as much as digits as its factorization.

20422995769081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 39191040, while the sum is 64.

The spelling of 20422995769081 in words is "twenty trillion, four hundred twenty-two billion, nine hundred ninety-five million, seven hundred sixty-nine thousand, eighty-one".