1323231201212 has 12 divisors (see below), whose sum is σ = 2348269456176. Its totient is φ = 652297070880.

The previous prime is 1323231201197. The next prime is 1323231201221. The reversal of 1323231201212 is 2121021323231.

It is a congruent number.

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, 2329632113 + ... + 2329632680.

It is an arithmetic number, because the mean of its divisors is an integer number (195689121348).

Almost surely, 2^{1323231201212} is an apocalyptic number.

It is an amenable number.

1323231201212 is a deficient number, since it is larger than the sum of its proper divisors (1025038254964).

1323231201212 is a wasteful number, since it uses less digits than its factorization.

1323231201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4659264868 (or 4659264866 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1323231201212 its reverse (2121021323231), we get a palindrome (3444252524443).

The spelling of 1323231201212 in words is "one trillion, three hundred twenty-three billion, two hundred thirty-one million, two hundred one thousand, two hundred twelve".