1321301111312 has 80 divisors (see below), whose sum is σ = 3152448647040. Its totient is φ = 522438183936.

The previous prime is 1321301111309. The next prime is 1321301111329. The reversal of 1321301111312 is 2131111031231.

It is a super-2 number, since 2×1321301111312² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2548139 + ... + 3022517.

It is an arithmetic number, because the mean of its divisors is an integer number (39405608088).

Almost surely, 2^{1321301111312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1321301111312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1576224323520).

1321301111312 is an abundant number, since it is smaller than the sum of its proper divisors (1831147535728).

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

1321301111312 is a wasteful number, since it uses less digits than its factorization.

1321301111312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476320 (or 476314 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 20.

Adding to 1321301111312 its reverse (2131111031231), we get a palindrome (3452412142543).

The spelling of 1321301111312 in words is "one trillion, three hundred twenty-one billion, three hundred one million, one hundred eleven thousand, three hundred twelve".