12124404121 has 4 divisors (see below), whose sum is σ = 12133072000. Its totient is φ = 12115736244.

The previous prime is 12124404119. The next prime is 12124404151. The reversal of 12124404121 is 12140442121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12124404121 - 2¹ = 12124404119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12124404092 and 12124404101.

It is not an unprimeable number, because it can be changed into a prime (12124404151) 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 3 ways as a sum of consecutive naturals, for example, 4331841 + ... + 4334638.

It is an arithmetic number, because the mean of its divisors is an integer number (3033268000).

Almost surely, 2^12124404121 is an apocalyptic number.

It is an amenable number.

12124404121 is a deficient number, since it is larger than the sum of its proper divisors (8667879).

12124404121 is an equidigital number, since it uses as much as digits as its factorization.

12124404121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8667878.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 12124404121 its reverse (12140442121), we get a palindrome (24264846242).

The spelling of 12124404121 in words is "twelve billion, one hundred twenty-four million, four hundred four thousand, one hundred twenty-one".