121341313243 has 6 divisors (see below), whose sum is σ = 123977975996. Its totient is φ = 118759581012.

The previous prime is 121341313231. The next prime is 121341313267. The reversal of 121341313243 is 342313143121.

It is not a de Polignac number, because 121341313243 - 2⁵ = 121341313211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121341313943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27463005 + ... + 27467422.

Almost surely, 2^121341313243 is an apocalyptic number.

121341313243 is a deficient number, since it is larger than the sum of its proper divisors (2636662753).

121341313243 is an frugal number, since it uses more digits than its factorization.

121341313243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54930521 (or 54930474 counting only the distinct ones).

The product of its digits is 5184, while the sum is 28.

Adding to 121341313243 its reverse (342313143121), we get a palindrome (463654456364).

The spelling of 121341313243 in words is "one hundred twenty-one billion, three hundred forty-one million, three hundred thirteen thousand, two hundred forty-three".