201012211112161 has 2 divisors, whose sum is σ = 201012211112162. Its totient is φ = 201012211112160.

The previous prime is 201012211112147. The next prime is 201012211112291. The reversal of 201012211112161 is 161211112210102.

201012211112161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184051116103936 + 16961095008225 = 13566544^2 + 4118385^2 .

It is a cyclic number.

It is not a de Polignac number, because 201012211112161 - 2⁷ = 201012211112033 is a prime.

It is not a weakly prime, because it can be changed into another prime (201012221112161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100506105556080 + 100506105556081.

It is an arithmetic number, because the mean of its divisors is an integer number (100506105556081).

Almost surely, 2^{201012211112161} is an apocalyptic number.

It is an amenable number.

201012211112161 is a deficient number, since it is larger than the sum of its proper divisors (1).

201012211112161 is an equidigital number, since it uses as much as digits as its factorization.

201012211112161 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 22.

Adding to 201012211112161 its reverse (161211112210102), we get a palindrome (362223323322263).

The spelling of 201012211112161 in words is "two hundred one trillion, twelve billion, two hundred eleven million, one hundred twelve thousand, one hundred sixty-one".