121243435141441 has 2 divisors, whose sum is σ = 121243435141442. Its totient is φ = 121243435141440.

The previous prime is 121243435141421. The next prime is 121243435141501. The reversal of 121243435141441 is 144141534342121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 70719202499841 + 50524232641600 = 8409471^2 + 7108040^2 .

It is a cyclic number.

It is not a de Polignac number, because 121243435141441 - 2¹⁵ = 121243435108673 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121243435141394 and 121243435141403.

It is not a weakly prime, because it can be changed into another prime (121243435141421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60621717570720 + 60621717570721.

It is an arithmetic number, because the mean of its divisors is an integer number (60621717570721).

Almost surely, 2^{121243435141441} is an apocalyptic number.

It is an amenable number.

121243435141441 is a deficient number, since it is larger than the sum of its proper divisors (1).

121243435141441 is an equidigital number, since it uses as much as digits as its factorization.

121243435141441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 184320, while the sum is 40.

Adding to 121243435141441 its reverse (144141534342121), we get a palindrome (265384969483562).

The spelling of 121243435141441 in words is "one hundred twenty-one trillion, two hundred forty-three billion, four hundred thirty-five million, one hundred forty-one thousand, four hundred forty-one".