121020111020141 has 2 divisors, whose sum is σ = 121020111020142. Its totient is φ = 121020111020140.

The previous prime is 121020111020129. The next prime is 121020111020173. The reversal of 121020111020141 is 141020111020121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100997394664516 + 20022716355625 = 10049746^2 + 4474675^2 .

It is a cyclic number.

It is not a de Polignac number, because 121020111020141 - 2³⁰ = 121019037278317 is a prime.

It is a super-3 number, since 3×121020111020141³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121020111020101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60510055510070 + 60510055510071.

It is an arithmetic number, because the mean of its divisors is an integer number (60510055510071).

Almost surely, 2^{121020111020141} is an apocalyptic number.

It is an amenable number.

121020111020141 is a deficient number, since it is larger than the sum of its proper divisors (1).

121020111020141 is an equidigital number, since it uses as much as digits as its factorization.

121020111020141 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121020111020141 its reverse (141020111020121), we get a palindrome (262040222040262).

The spelling of 121020111020141 in words is "one hundred twenty-one trillion, twenty billion, one hundred eleven million, twenty thousand, one hundred forty-one".