20222201120161 has 2 divisors, whose sum is σ = 20222201120162. Its totient is φ = 20222201120160.

The previous prime is 20222201120159. The next prime is 20222201120189. The reversal of 20222201120161 is 16102110222202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14892313211136 + 5329887909025 = 3859056^2 + 2308655^2 .

It is a cyclic number.

It is not a de Polignac number, because 20222201120161 - 2¹ = 20222201120159 is a prime.

Together with 20222201120159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20222201130161) 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, 10111100560080 + 10111100560081.

It is an arithmetic number, because the mean of its divisors is an integer number (10111100560081).

Almost surely, 2^{20222201120161} is an apocalyptic number.

It is an amenable number.

20222201120161 is a deficient number, since it is larger than the sum of its proper divisors (1).

20222201120161 is an equidigital number, since it uses as much as digits as its factorization.

20222201120161 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 20222201120161 its reverse (16102110222202), we get a palindrome (36324311342363).

The spelling of 20222201120161 in words is "twenty trillion, two hundred twenty-two billion, two hundred one million, one hundred twenty thousand, one hundred sixty-one".