20122270361 has 2 divisors, whose sum is σ = 20122270362. Its totient is φ = 20122270360.

The previous prime is 20122270297. The next prime is 20122270367. The reversal of 20122270361 is 16307222102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16017433600 + 4104836761 = 126560^2 + 64069^2 .

It is a cyclic number.

It is not a de Polignac number, because 20122270361 - 2⁶ = 20122270297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20122270361.

It is not a weakly prime, because it can be changed into another prime (20122270367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10061135180 + 10061135181.

It is an arithmetic number, because the mean of its divisors is an integer number (10061135181).

Almost surely, 2^20122270361 is an apocalyptic number.

It is an amenable number.

20122270361 is a deficient number, since it is larger than the sum of its proper divisors (1).

20122270361 is an equidigital number, since it uses as much as digits as its factorization.

20122270361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 26.

Adding to 20122270361 its reverse (16307222102), we get a palindrome (36429492463).

The spelling of 20122270361 in words is "twenty billion, one hundred twenty-two million, two hundred seventy thousand, three hundred sixty-one".