243120230121 has 8 divisors (see below), whose sum is σ = 324554186560. Its totient is φ = 161883213552.

The previous prime is 243120230057. The next prime is 243120230141. The reversal of 243120230121 is 121032021342.

243120230121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 243120230121 - 2⁶ = 243120230057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243120230141) 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 7 ways as a sum of consecutive naturals, for example, 49232086 + ... + 49237023.

It is an arithmetic number, because the mean of its divisors is an integer number (40569273320).

Almost surely, 2^243120230121 is an apocalyptic number.

It is an amenable number.

243120230121 is a deficient number, since it is larger than the sum of its proper divisors (81433956439).

243120230121 is an equidigital number, since it uses as much as digits as its factorization.

243120230121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98469935.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 243120230121 its reverse (121032021342), we get a palindrome (364152251463).

The spelling of 243120230121 in words is "two hundred forty-three billion, one hundred twenty million, two hundred thirty thousand, one hundred twenty-one".