121344140243 has 8 divisors (see below), whose sum is σ = 127749988800. Its totient is φ = 114940223208.

The previous prime is 121344140233. The next prime is 121344140273. The reversal of 121344140243 is 342041443121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121344140243 - 2⁶ = 121344140179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121344140233) 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 in 7 ways as a sum of consecutive naturals, for example, 353021 + ... + 606062.

It is an arithmetic number, because the mean of its divisors is an integer number (15968748600).

Almost surely, 2^121344140243 is an apocalyptic number.

121344140243 is a deficient number, since it is larger than the sum of its proper divisors (6405848557).

121344140243 is an equidigital number, since it uses as much as digits as its factorization.

121344140243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965761.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 121344140243 its reverse (342041443121), we get a palindrome (463385583364).

The spelling of 121344140243 in words is "one hundred twenty-one billion, three hundred forty-four million, one hundred forty thousand, two hundred forty-three".