121411121320443 has 4 divisors (see below), whose sum is σ = 161881495093928. Its totient is φ = 80940747546960.

The previous prime is 121411121320441. The next prime is 121411121320519. The reversal of 121411121320443 is 344023121114121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 121411121320443 - 2¹ = 121411121320441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121411121320443.

It is not an unprimeable number, because it can be changed into a prime (121411121320441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20235186886738 + ... + 20235186886743.

It is an arithmetic number, because the mean of its divisors is an integer number (40470373773482).

Almost surely, 2^{121411121320443} is an apocalyptic number.

121411121320443 is a deficient number, since it is larger than the sum of its proper divisors (40470373773485).

121411121320443 is an equidigital number, since it uses as much as digits as its factorization.

121411121320443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40470373773484.

The product of its (nonzero) digits is 4608, while the sum is 30.

Adding to 121411121320443 its reverse (344023121114121), we get a palindrome (465434242434564).

The spelling of 121411121320443 in words is "one hundred twenty-one trillion, four hundred eleven billion, one hundred twenty-one million, three hundred twenty thousand, four hundred forty-three".