121211113043 has 4 divisors (see below), whose sum is σ = 121211900280. Its totient is φ = 121210325808.

The previous prime is 121211113033. The next prime is 121211113063. The reversal of 121211113043 is 340311112121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 340311112121 = 17 ⋅20018300713.

It is a cyclic number.

It is not a de Polignac number, because 121211113043 - 2²⁰ = 121210064467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121211113033) 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, 78653 + ... + 498606.

It is an arithmetic number, because the mean of its divisors is an integer number (30302975070).

Almost surely, 2^121211113043 is an apocalyptic number.

121211113043 is a deficient number, since it is larger than the sum of its proper divisors (787237).

121211113043 is an equidigital number, since it uses as much as digits as its factorization.

121211113043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787236.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 121211113043 its reverse (340311112121), we get a palindrome (461522225164).

The spelling of 121211113043 in words is "one hundred twenty-one billion, two hundred eleven million, one hundred thirteen thousand, forty-three".