1321111423312 has 20 divisors (see below), whose sum is σ = 2559786475680. Its totient is φ = 660521365088.

The previous prime is 1321111423297. The next prime is 1321111423343. The reversal of 1321111423312 is 2133241111231.

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, 1827898 + ... + 2446105.

It is an arithmetic number, because the mean of its divisors is an integer number (127989323784).

Almost surely, 2^{1321111423312} is an apocalyptic number.

It is an amenable number.

1321111423312 is a deficient number, since it is larger than the sum of its proper divisors (1238675052368).

1321111423312 is a wasteful number, since it uses less digits than its factorization.

1321111423312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4293330 (or 4293324 counting only the distinct ones).

The product of its digits is 864, while the sum is 25.

Adding to 1321111423312 its reverse (2133241111231), we get a palindrome (3454352534543).

The spelling of 1321111423312 in words is "one trillion, three hundred twenty-one billion, one hundred eleven million, four hundred twenty-three thousand, three hundred twelve".