12404313223121 has 8 divisors (see below), whose sum is σ = 13488951105000. Its totient is φ = 11359116718848.

The previous prime is 12404313223061. The next prime is 12404313223147. The reversal of 12404313223121 is 12132231340421.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7987321654225 + 4416991568896 = 2826185^2 + 2101664^2 .

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 12404313223121 - 2²⁶ = 12404246114257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12404313223171) 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, 9860343746 + ... + 9860345003.

It is an arithmetic number, because the mean of its divisors is an integer number (1686118888125).

Almost surely, 2^{12404313223121} is an apocalyptic number.

It is an amenable number.

12404313223121 is a deficient number, since it is larger than the sum of its proper divisors (1084637881879).

12404313223121 is a wasteful number, since it uses less digits than its factorization.

12404313223121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19720688803.

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 12404313223121 its reverse (12132231340421), we get a palindrome (24536544563542).

The spelling of 12404313223121 in words is "twelve trillion, four hundred four billion, three hundred thirteen million, two hundred twenty-three thousand, one hundred twenty-one".