1000222200161 has 2 divisors, whose sum is σ = 1000222200162. Its totient is φ = 1000222200160.

The previous prime is 1000222200151. The next prime is 1000222200239. The reversal of 1000222200161 is 1610022220001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 711186935761 + 289035264400 = 843319^2 + 537620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000222200161 is a prime.

It is not a weakly prime, because it can be changed into another prime (1000222200121) 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, 500111100080 + 500111100081.

It is an arithmetic number, because the mean of its divisors is an integer number (500111100081).

Almost surely, 2^{1000222200161} is an apocalyptic number.

It is an amenable number.

1000222200161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000222200161 is an equidigital number, since it uses as much as digits as its factorization.

1000222200161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1000222200161 its reverse (1610022220001), we get a palindrome (2610244420162).

The spelling of 1000222200161 in words is "one trillion, two hundred twenty-two million, two hundred thousand, one hundred sixty-one".