12231221323009 has 4 divisors (see below), whose sum is σ = 13172084501716. Its totient is φ = 11290358144304.

The previous prime is 12231221322857. The next prime is 12231221323037. The reversal of 12231221323009 is 90032312213221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 537146807409 + 11694074515600 = 732903^2 + 3419660^2 .

It is a cyclic number.

It is not a de Polignac number, because 12231221323009 - 2³¹ = 12229073839361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12231221323099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 470431589334 + ... + 470431589359.

It is an arithmetic number, because the mean of its divisors is an integer number (3293021125429).

Almost surely, 2^{12231221323009} is an apocalyptic number.

It is an amenable number.

12231221323009 is a deficient number, since it is larger than the sum of its proper divisors (940863178707).

12231221323009 is an equidigital number, since it uses as much as digits as its factorization.

12231221323009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 940863178706.

The product of its (nonzero) digits is 7776, while the sum is 31.

The spelling of 12231221323009 in words is "twelve trillion, two hundred thirty-one billion, two hundred twenty-one million, three hundred twenty-three thousand, nine".