121040413243 has 2 divisors, whose sum is σ = 121040413244. Its totient is φ = 121040413242.

The previous prime is 121040413213. The next prime is 121040413259. The reversal of 121040413243 is 342314040121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121040413243 - 2²⁹ = 120503542331 is a prime.

It is not a weakly prime, because it can be changed into another prime (121040413213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60520206621 + 60520206622.

It is an arithmetic number, because the mean of its divisors is an integer number (60520206622).

Almost surely, 2^121040413243 is an apocalyptic number.

121040413243 is a deficient number, since it is larger than the sum of its proper divisors (1).

121040413243 is an equidigital number, since it uses as much as digits as its factorization.

121040413243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 121040413243 its reverse (342314040121), we get a palindrome (463354453364).

The spelling of 121040413243 in words is "one hundred twenty-one billion, forty million, four hundred thirteen thousand, two hundred forty-three".