20322020211281 has 2 divisors, whose sum is σ = 20322020211282. Its totient is φ = 20322020211280.

The previous prime is 20322020211271. The next prime is 20322020211301. The reversal of 20322020211281 is 18211202022302.

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., 11439385070656 + 8882635140625 = 3382216^2 + 2980375^2 .

It is a cyclic number.

It is not a de Polignac number, because 20322020211281 - 2³⁴ = 20304840342097 is a prime.

It is a super-2 number, since 2×20322020211281² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20322020211281.

It is not a weakly prime, because it can be changed into another prime (20322020211271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10161010105640 + 10161010105641.

It is an arithmetic number, because the mean of its divisors is an integer number (10161010105641).

Almost surely, 2^{20322020211281} is an apocalyptic number.

It is an amenable number.

20322020211281 is a deficient number, since it is larger than the sum of its proper divisors (1).

20322020211281 is an equidigital number, since it uses as much as digits as its factorization.

20322020211281 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 26.

Adding to 20322020211281 its reverse (18211202022302), we get a palindrome (38533222233583).

The spelling of 20322020211281 in words is "twenty trillion, three hundred twenty-two billion, twenty million, two hundred eleven thousand, two hundred eighty-one".