201000120122161 has 2 divisors, whose sum is σ = 201000120122162. Its totient is φ = 201000120122160.

The previous prime is 201000120122147. The next prime is 201000120122171. The reversal of 201000120122161 is 161221021000102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194910749569936 + 6089370552225 = 13961044^2 + 2467665^2 .

It is a cyclic number.

It is not a de Polignac number, because 201000120122161 - 2⁷ = 201000120122033 is a prime.

It is not a weakly prime, because it can be changed into another prime (201000120122171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100500060061080 + 100500060061081.

It is an arithmetic number, because the mean of its divisors is an integer number (100500060061081).

Almost surely, 2^{201000120122161} is an apocalyptic number.

It is an amenable number.

201000120122161 is a deficient number, since it is larger than the sum of its proper divisors (1).

201000120122161 is an equidigital number, since it uses as much as digits as its factorization.

201000120122161 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 19.

Adding to 201000120122161 its reverse (161221021000102), we get a palindrome (362221141122263).

The spelling of 201000120122161 in words is "two hundred one trillion, one hundred twenty million, one hundred twenty-two thousand, one hundred sixty-one".