12104523121 has 8 divisors (see below), whose sum is σ = 12529618920. Its totient is φ = 11679940608.

The previous prime is 12104523113. The next prime is 12104523143. The reversal of 12104523121 is 12132540121.

It can be written as a sum of positive squares in 4 ways, for example, as 2112321600 + 9992201521 = 45960^2 + 99961^2 .

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 12104523121 - 2³ = 12104523113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12104523092 and 12104523101.

It is not an unprimeable number, because it can be changed into a prime (12104523161) 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, 80016 + ... + 174961.

It is an arithmetic number, because the mean of its divisors is an integer number (1566202365).

Almost surely, 2^12104523121 is an apocalyptic number.

It is an amenable number.

12104523121 is a deficient number, since it is larger than the sum of its proper divisors (425095799).

12104523121 is a wasteful number, since it uses less digits than its factorization.

12104523121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256643.

The product of its (nonzero) digits is 480, while the sum is 22.

The spelling of 12104523121 in words is "twelve billion, one hundred four million, five hundred twenty-three thousand, one hundred twenty-one".