12231221323012 has 12 divisors (see below), whose sum is σ = 22663733628060. Its totient is φ = 5755868857856.

The previous prime is 12231221322857. The next prime is 12231221323037. The reversal of 12231221323012 is 21032312213221.

It can be written as a sum of positive squares in 2 ways, for example, as 5581094404356 + 6650126918656 = 2362434^2 + 2578784^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89935450837 + ... + 89935450972.

It is an arithmetic number, because the mean of its divisors is an integer number (1888644469005).

Almost surely, 2^{12231221323012} is an apocalyptic number.

It is an amenable number.

12231221323012 is a deficient number, since it is larger than the sum of its proper divisors (10432512305048).

12231221323012 is a wasteful number, since it uses less digits than its factorization.

12231221323012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179870901830 (or 179870901828 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 12231221323012 its reverse (21032312213221), we get a palindrome (33263533536233).

The spelling of 12231221323012 in words is "twelve trillion, two hundred thirty-one billion, two hundred twenty-one million, three hundred twenty-three thousand, twelve".