1320322121312 has 24 divisors (see below), whose sum is σ = 2752289129016. Its totient is φ = 621328056832.

The previous prime is 1320322121303. The next prime is 1320322121323. The reversal of 1320322121312 is 2131212230231.

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, 1213530818 + ... + 1213531905.

It is an arithmetic number, because the mean of its divisors is an integer number (114678713709).

Almost surely, 2^{1320322121312} is an apocalyptic number.

It is an amenable number.

1320322121312 is an abundant number, since it is smaller than the sum of its proper divisors (1431967007704).

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

1320322121312 is a wasteful number, since it uses less digits than its factorization.

1320322121312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2427062750 (or 2427062742 counting only the distinct ones).

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

Adding to 1320322121312 its reverse (2131212230231), we get a palindrome (3451534351543).

The spelling of 1320322121312 in words is "one trillion, three hundred twenty billion, three hundred twenty-two million, one hundred twenty-one thousand, three hundred twelve".