10211210112161 has 2 divisors, whose sum is σ = 10211210112162. Its totient is φ = 10211210112160.

The previous prime is 10211210112091. The next prime is 10211210112221. The reversal of 10211210112161 is 16121101211201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8934210670225 + 1276999441936 = 2989015^2 + 1130044^2 .

It is a cyclic number.

It is not a de Polignac number, because 10211210112161 - 2¹⁴ = 10211210095777 is a prime.

It is not a weakly prime, because it can be changed into another prime (10211210102161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5105605056080 + 5105605056081.

It is an arithmetic number, because the mean of its divisors is an integer number (5105605056081).

Almost surely, 2^{10211210112161} is an apocalyptic number.

It is an amenable number.

10211210112161 is a deficient number, since it is larger than the sum of its proper divisors (1).

10211210112161 is an equidigital number, since it uses as much as digits as its factorization.

10211210112161 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 20.

Adding to 10211210112161 its reverse (16121101211201), we get a palindrome (26332311323362).

The spelling of 10211210112161 in words is "ten trillion, two hundred eleven billion, two hundred ten million, one hundred twelve thousand, one hundred sixty-one".