121102211000161 has 2 divisors, whose sum is σ = 121102211000162. Its totient is φ = 121102211000160.

The previous prime is 121102211000143. The next prime is 121102211000249. The reversal of 121102211000161 is 161000112201121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96757420806225 + 24344790193936 = 9836535^2 + 4934044^2 .

It is a cyclic number.

It is not a de Polignac number, because 121102211000161 - 2¹³ = 121102210991969 is a prime.

It is not a weakly prime, because it can be changed into another prime (121102211060161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60551105500080 + 60551105500081.

It is an arithmetic number, because the mean of its divisors is an integer number (60551105500081).

Almost surely, 2^{121102211000161} is an apocalyptic number.

It is an amenable number.

121102211000161 is a deficient number, since it is larger than the sum of its proper divisors (1).

121102211000161 is an equidigital number, since it uses as much as digits as its factorization.

121102211000161 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 19.

Adding to 121102211000161 its reverse (161000112201121), we get a palindrome (282102323201282).

The spelling of 121102211000161 in words is "one hundred twenty-one trillion, one hundred two billion, two hundred eleven million, one hundred sixty-one", and thus it is an aban number.