20221203161 has 2 divisors, whose sum is σ = 20221203162. Its totient is φ = 20221203160.

The previous prime is 20221203109. The next prime is 20221203173. The reversal of 20221203161 is 16130212202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18790926400 + 1430276761 = 137080^2 + 37819^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20221203161 is a prime.

It is not a weakly prime, because it can be changed into another prime (20221202161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110601580 + 10110601581.

It is an arithmetic number, because the mean of its divisors is an integer number (10110601581).

Almost surely, 2^20221203161 is an apocalyptic number.

It is an amenable number.

20221203161 is a deficient number, since it is larger than the sum of its proper divisors (1).

20221203161 is an equidigital number, since it uses as much as digits as its factorization.

20221203161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 20221203161 its reverse (16130212202), we get a palindrome (36351415363).

The spelling of 20221203161 in words is "twenty billion, two hundred twenty-one million, two hundred three thousand, one hundred sixty-one".