121013102100161 has 2 divisors, whose sum is σ = 121013102100162. Its totient is φ = 121013102100160.

The previous prime is 121013102100151. The next prime is 121013102100167. The reversal of 121013102100161 is 161001201310121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 107662621123600 + 13350480976561 = 10376060^2 + 3653831^2 .

It is a cyclic number.

It is not a de Polignac number, because 121013102100161 - 2¹⁰ = 121013102099137 is a prime.

It is not a weakly prime, because it can be changed into another prime (121013102100167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60506551050080 + 60506551050081.

It is an arithmetic number, because the mean of its divisors is an integer number (60506551050081).

Almost surely, 2^{121013102100161} is an apocalyptic number.

It is an amenable number.

121013102100161 is a deficient number, since it is larger than the sum of its proper divisors (1).

121013102100161 is an equidigital number, since it uses as much as digits as its factorization.

121013102100161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 121013102100161 its reverse (161001201310121), we get a palindrome (282014303410282).

The spelling of 121013102100161 in words is "one hundred twenty-one trillion, thirteen billion, one hundred two million, one hundred thousand, one hundred sixty-one".