1320113121312 has 48 divisors (see below), whose sum is σ = 3468979749312. Its totient is φ = 439570049280.

The previous prime is 1320113121281. The next prime is 1320113121329. The reversal of 1320113121312 is 2131213110231.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×1320113121312² (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 7 ways as a sum of consecutive naturals, for example, 7216348 + ... + 7397019.

It is an arithmetic number, because the mean of its divisors is an integer number (72270411444).

Almost surely, 2^{1320113121312} is an apocalyptic number.

1320113121312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1320113121312 is an abundant number, since it is smaller than the sum of its proper divisors (2148866628000).

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

1320113121312 is a wasteful number, since it uses less digits than its factorization.

1320113121312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14614321 (or 14614313 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1320113121312 its reverse (2131213110231), we get a palindrome (3451326231543).

The spelling of 1320113121312 in words is "one trillion, three hundred twenty billion, one hundred thirteen million, one hundred twenty-one thousand, three hundred twelve".