20220002161 has 2 divisors, whose sum is σ = 20220002162. Its totient is φ = 20220002160.

The previous prime is 20220002129. The next prime is 20220002183. The reversal of 20220002161 is 16120002202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17733982561 + 2486019600 = 133169^2 + 49860^2 .

It is a cyclic number.

It is not a de Polignac number, because 20220002161 - 2⁵ = 20220002129 is a prime.

It is not a weakly prime, because it can be changed into another prime (20220002191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10110001080 + 10110001081.

It is an arithmetic number, because the mean of its divisors is an integer number (10110001081).

Almost surely, 2^20220002161 is an apocalyptic number.

It is an amenable number.

20220002161 is a deficient number, since it is larger than the sum of its proper divisors (1).

20220002161 is an equidigital number, since it uses as much as digits as its factorization.

20220002161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 20220002161 its reverse (16120002202), we get a palindrome (36340004363).

The spelling of 20220002161 in words is "twenty billion, two hundred twenty million, two thousand, one hundred sixty-one".