121324440242243 has 16 divisors (see below), whose sum is σ = 140777196384000. Its totient is φ = 102402986675616.

The previous prime is 121324440242189. The next prime is 121324440242311. The reversal of 121324440242243 is 342242044423121.

It is a cyclic number.

It is not a de Polignac number, because 121324440242243 - 2⁸ = 121324440241987 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121324440242197 and 121324440242206.

It is not an unprimeable number, because it can be changed into a prime (121324440242443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45761921 + ... + 48340482.

It is an arithmetic number, because the mean of its divisors is an integer number (8798574774000).

Almost surely, 2^{121324440242243} is an apocalyptic number.

121324440242243 is a deficient number, since it is larger than the sum of its proper divisors (19452756141757).

121324440242243 is an equidigital number, since it uses as much as digits as its factorization.

121324440242243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94105226.

The product of its (nonzero) digits is 294912, while the sum is 38.

Adding to 121324440242243 its reverse (342242044423121), we get a palindrome (463566484665364).

The spelling of 121324440242243 in words is "one hundred twenty-one trillion, three hundred twenty-four billion, four hundred forty million, two hundred forty-two thousand, two hundred forty-three".