2220002171161 has 2 divisors, whose sum is σ = 2220002171162. Its totient is φ = 2220002171160.

The previous prime is 2220002171147. The next prime is 2220002171209. The reversal of 2220002171161 is 1611712000222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1961512291600 + 258489879561 = 1400540^2 + 508419^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220002171161 - 2⁹ = 2220002170649 is a prime.

It is not a weakly prime, because it can be changed into another prime (2220002171131) 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, 1110001085580 + 1110001085581.

It is an arithmetic number, because the mean of its divisors is an integer number (1110001085581).

Almost surely, 2^{2220002171161} is an apocalyptic number.

It is an amenable number.

2220002171161 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220002171161 is an equidigital number, since it uses as much as digits as its factorization.

2220002171161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 25.

Adding to 2220002171161 its reverse (1611712000222), we get a palindrome (3831714171383).

The spelling of 2220002171161 in words is "two trillion, two hundred twenty billion, two million, one hundred seventy-one thousand, one hundred sixty-one".