12321146605 has 16 divisors (see below), whose sum is σ = 14838969600. Its totient is φ = 9821233728.

The previous prime is 12321146603. The next prime is 12321146609. The reversal of 12321146605 is 50664112321.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12321146605 - 2¹ = 12321146603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12321146603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4156854 + ... + 4159816.

It is an arithmetic number, because the mean of its divisors is an integer number (927435600).

Almost surely, 2^12321146605 is an apocalyptic number.

It is an amenable number.

12321146605 is a deficient number, since it is larger than the sum of its proper divisors (2517822995).

12321146605 is a wasteful number, since it uses less digits than its factorization.

12321146605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5700.

The product of its (nonzero) digits is 8640, while the sum is 31.

Adding to 12321146605 its reverse (50664112321), we get a palindrome (62985258926).

The spelling of 12321146605 in words is "twelve billion, three hundred twenty-one million, one hundred forty-six thousand, six hundred five".