1323111213212 has 24 divisors (see below), whose sum is σ = 2329415983104. Its totient is φ = 657564152112.

The previous prime is 1323111213209. The next prime is 1323111213269. The reversal of 1323111213212 is 2123121113231.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 24747413 + ... + 24800819.

It is an arithmetic number, because the mean of its divisors is an integer number (97058999296).

Almost surely, 2^{1323111213212} is an apocalyptic number.

It is an amenable number.

1323111213212 is a deficient number, since it is larger than the sum of its proper divisors (1006304769892).

1323111213212 is a wasteful number, since it uses less digits than its factorization.

1323111213212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90665 (or 90663 counting only the distinct ones).

The product of its digits is 432, while the sum is 23.

Adding to 1323111213212 its reverse (2123121113231), we get a palindrome (3446232326443).

The spelling of 1323111213212 in words is "one trillion, three hundred twenty-three billion, one hundred eleven million, two hundred thirteen thousand, two hundred twelve".