200120211120161 has 2 divisors, whose sum is σ = 200120211120162. Its totient is φ = 200120211120160.

The previous prime is 200120211120103. The next prime is 200120211120239. The reversal of 200120211120161 is 161021112021002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 199534863713761 + 585347406400 = 14125681^2 + 765080^2 .

It is a cyclic number.

It is not a de Polignac number, because 200120211120161 - 2²⁶ = 200120144011297 is a prime.

It is not a weakly prime, because it can be changed into another prime (200120210120161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060105560080 + 100060105560081.

It is an arithmetic number, because the mean of its divisors is an integer number (100060105560081).

Almost surely, 2^{200120211120161} is an apocalyptic number.

It is an amenable number.

200120211120161 is a deficient number, since it is larger than the sum of its proper divisors (1).

200120211120161 is an equidigital number, since it uses as much as digits as its factorization.

200120211120161 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 20.

Adding to 200120211120161 its reverse (161021112021002), we get a palindrome (361141323141163).

The spelling of 200120211120161 in words is "two hundred trillion, one hundred twenty billion, two hundred eleven million, one hundred twenty thousand, one hundred sixty-one".