121003111120121 has 2 divisors, whose sum is σ = 121003111120122. Its totient is φ = 121003111120120.

The previous prime is 121003111120063. The next prime is 121003111120139. The reversal of 121003111120121 is 121021111300121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 119825862250000 + 1177248870121 = 10946500^2 + 1085011^2 .

It is a cyclic number.

It is not a de Polignac number, because 121003111120121 - 2²⁶ = 121003044011257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121003111120121.

It is not a weakly prime, because it can be changed into another prime (121003111120321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60501555560060 + 60501555560061.

It is an arithmetic number, because the mean of its divisors is an integer number (60501555560061).

Almost surely, 2^{121003111120121} is an apocalyptic number.

It is an amenable number.

121003111120121 is a deficient number, since it is larger than the sum of its proper divisors (1).

121003111120121 is an equidigital number, since it uses as much as digits as its factorization.

121003111120121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 121003111120121 its reverse (121021111300121), we get a palindrome (242024222420242).

The spelling of 121003111120121 in words is "one hundred twenty-one trillion, three billion, one hundred eleven million, one hundred twenty thousand, one hundred twenty-one".