200120112161 has 2 divisors, whose sum is σ = 200120112162. Its totient is φ = 200120112160.

The previous prime is 200120112091. The next prime is 200120112211. The reversal of 200120112161 is 161211021002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184250411536 + 15869700625 = 429244^2 + 125975^2 .

It is a cyclic number.

It is not a de Polignac number, because 200120112161 - 2¹⁰ = 200120111137 is a prime.

It is not a weakly prime, because it can be changed into another prime (200120112461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060056080 + 100060056081.

It is an arithmetic number, because the mean of its divisors is an integer number (100060056081).

Almost surely, 2^200120112161 is an apocalyptic number.

It is an amenable number.

200120112161 is a deficient number, since it is larger than the sum of its proper divisors (1).

200120112161 is an equidigital number, since it uses as much as digits as its factorization.

200120112161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 200120112161 its reverse (161211021002), we get a palindrome (361331133163).

The spelling of 200120112161 in words is "two hundred billion, one hundred twenty million, one hundred twelve thousand, one hundred sixty-one".