243124166121 has 8 divisors (see below), whose sum is σ = 325370632320. Its totient is φ = 161480238672.

The previous prime is 243124166113. The next prime is 243124166141. The reversal of 243124166121 is 121661421342.

It is a happy number.

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

It is not a de Polignac number, because 243124166121 - 2³ = 243124166113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (243124166141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150633745 + ... + 150635358.

It is an arithmetic number, because the mean of its divisors is an integer number (40671329040).

Almost surely, 2^243124166121 is an apocalyptic number.

It is an amenable number.

243124166121 is a deficient number, since it is larger than the sum of its proper divisors (82246466199).

243124166121 is a wasteful number, since it uses less digits than its factorization.

243124166121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 301269375.

The product of its digits is 13824, while the sum is 33.

Adding to 243124166121 its reverse (121661421342), we get a palindrome (364785587463).

The spelling of 243124166121 in words is "two hundred forty-three billion, one hundred twenty-four million, one hundred sixty-six thousand, one hundred twenty-one".