12222020210161 has 2 divisors, whose sum is σ = 12222020210162. Its totient is φ = 12222020210160.

The previous prime is 12222020210021. The next prime is 12222020210209. The reversal of 12222020210161 is 16101202022221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7812360403600 + 4409659806561 = 2795060^2 + 2099919^2 .

It is an emirp because it is prime and its reverse (16101202022221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12222020210161 - 2¹¹ = 12222020208113 is a prime.

It is not a weakly prime, because it can be changed into another prime (12222020280161) 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, 6111010105080 + 6111010105081.

It is an arithmetic number, because the mean of its divisors is an integer number (6111010105081).

Almost surely, 2^{12222020210161} is an apocalyptic number.

It is an amenable number.

12222020210161 is a deficient number, since it is larger than the sum of its proper divisors (1).

12222020210161 is an equidigital number, since it uses as much as digits as its factorization.

12222020210161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 12222020210161 its reverse (16101202022221), we get a palindrome (28323222232382).

The spelling of 12222020210161 in words is "twelve trillion, two hundred twenty-two billion, twenty million, two hundred ten thousand, one hundred sixty-one".