12604040121 has 8 divisors (see below), whose sum is σ = 17259586624. Its totient is φ = 8175593520.

The previous prime is 12604040087. The next prime is 12604040131. The reversal of 12604040121 is 12104040621.

It is a happy number.

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

It is not a de Polignac number, because 12604040121 - 2¹⁷ = 12603909049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12604040131) 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, 56774845 + ... + 56775066.

It is an arithmetic number, because the mean of its divisors is an integer number (2157448328).

Almost surely, 2^12604040121 is an apocalyptic number.

It is an amenable number.

12604040121 is a deficient number, since it is larger than the sum of its proper divisors (4655546503).

12604040121 is a wasteful number, since it uses less digits than its factorization.

12604040121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113549951.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 12604040121 its reverse (12104040621), we get a palindrome (24708080742).

The spelling of 12604040121 in words is "twelve billion, six hundred four million, forty thousand, one hundred twenty-one".