1321324312112 has 120 divisors (see below), whose sum is σ = 3319173653040. Its totient is φ = 504919941120.

The previous prime is 1321324312069. The next prime is 1321324312159. The reversal of 1321324312112 is 2112134231231.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2355689 + ... + 2862152.

It is an arithmetic number, because the mean of its divisors is an integer number (27659780442).

Almost surely, 2^{1321324312112} is an apocalyptic number.

It is an amenable number.

1321324312112 is an abundant number, since it is smaller than the sum of its proper divisors (1997849340928).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321324312112 is a wasteful number, since it uses less digits than its factorization.

1321324312112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5217899 (or 5217886 counting only the distinct ones).

The product of its digits is 1728, while the sum is 26.

Adding to 1321324312112 its reverse (2112134231231), we get a palindrome (3433458543343).

The spelling of 1321324312112 in words is "one trillion, three hundred twenty-one billion, three hundred twenty-four million, three hundred twelve thousand, one hundred twelve".