121102002111161 has 2 divisors, whose sum is σ = 121102002111162. Its totient is φ = 121102002111160.

The previous prime is 121102002111121. The next prime is 121102002111317. The reversal of 121102002111161 is 161111200201121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115292166781561 + 5809835329600 = 10737419^2 + 2410360^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121102002111161 is a prime.

It is not a weakly prime, because it can be changed into another prime (121102002111121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60551001055580 + 60551001055581.

It is an arithmetic number, because the mean of its divisors is an integer number (60551001055581).

Almost surely, 2^{121102002111161} is an apocalyptic number.

It is an amenable number.

121102002111161 is a deficient number, since it is larger than the sum of its proper divisors (1).

121102002111161 is an equidigital number, since it uses as much as digits as its factorization.

121102002111161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 20.

Adding to 121102002111161 its reverse (161111200201121), we get a palindrome (282213202312282).

The spelling of 121102002111161 in words is "one hundred twenty-one trillion, one hundred two billion, two million, one hundred eleven thousand, one hundred sixty-one".