24243212121 has 8 divisors (see below), whose sum is σ = 32325768864. Its totient is φ = 16161398400.

The previous prime is 24243212111. The next prime is 24243212153. The reversal of 24243212121 is 12121234242.

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

It is a de Polignac number, because none of the positive numbers 2^k-24243212121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 24243212091 and 24243212100.

It is not an unprimeable number, because it can be changed into a prime (24243212111) 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, 104551 + ... + 243756.

It is an arithmetic number, because the mean of its divisors is an integer number (4040721108).

Almost surely, 2^24243212121 is an apocalyptic number.

It is an amenable number.

24243212121 is a deficient number, since it is larger than the sum of its proper divisors (8082556743).

24243212121 is a wasteful number, since it uses less digits than its factorization.

24243212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371511.

The product of its digits is 1536, while the sum is 24.

Adding to 24243212121 its reverse (12121234242), we get a palindrome (36364446363).

The spelling of 24243212121 in words is "twenty-four billion, two hundred forty-three million, two hundred twelve thousand, one hundred twenty-one".