243121123411 has 8 divisors (see below), whose sum is σ = 243654357744. Its totient is φ = 242588468640.

The previous prime is 243121123409. The next prime is 243121123429. The reversal of 243121123411 is 114321121342.

243121123411 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 a cyclic number.

It is not a de Polignac number, because 243121123411 - 2¹ = 243121123409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243121123451) 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, 700401 + ... + 988333.

It is an arithmetic number, because the mean of its divisors is an integer number (30456794718).

Almost surely, 2^243121123411 is an apocalyptic number.

243121123411 is a deficient number, since it is larger than the sum of its proper divisors (533234333).

243121123411 is a wasteful number, since it uses less digits than its factorization.

243121123411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289781.

The product of its digits is 1152, while the sum is 25.

Adding to 243121123411 its reverse (114321121342), we get a palindrome (357442244753).

The spelling of 243121123411 in words is "two hundred forty-three billion, one hundred twenty-one million, one hundred twenty-three thousand, four hundred eleven".