200120021111161 has 2 divisors, whose sum is σ = 200120021111162. Its totient is φ = 200120021111160.

The previous prime is 200120021111149. The next prime is 200120021111173. The reversal of 200120021111161 is 161111120021002.

It is a balanced prime because it is at equal distance from previous prime (200120021111149) and next prime (200120021111173).

It can be written as a sum of positive squares in only one way, i.e., 162456564764025 + 37663456347136 = 12745845^2 + 6137056^2 .

It is a cyclic number.

It is not a de Polignac number, because 200120021111161 - 2⁴⁵ = 164935649022329 is a prime.

It is a super-2 number, since 2×200120021111161² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (200120021111191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060010555580 + 100060010555581.

It is an arithmetic number, because the mean of its divisors is an integer number (100060010555581).

Almost surely, 2^{200120021111161} is an apocalyptic number.

It is an amenable number.

200120021111161 is a deficient number, since it is larger than the sum of its proper divisors (1).

200120021111161 is an equidigital number, since it uses as much as digits as its factorization.

200120021111161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 19.

Adding to 200120021111161 its reverse (161111120021002), we get a palindrome (361231141132163).

The spelling of 200120021111161 in words is "two hundred trillion, one hundred twenty billion, twenty-one million, one hundred eleven thousand, one hundred sixty-one".