1320111023120 has 80 divisors (see below), whose sum is σ = 3203198410752. Its totient is φ = 505008007680.

The previous prime is 1320111023111. The next prime is 1320111023123. The reversal of 1320111023120 is 213201110231.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×1320111023120² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1320111023123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12664334 + ... + 12768146.

Almost surely, 2^{1320111023120} is an apocalyptic number.

1320111023120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320111023120 is an abundant number, since it is smaller than the sum of its proper divisors (1883087387632).

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

1320111023120 is a wasteful number, since it uses less digits than its factorization.

1320111023120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110760 (or 110754 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1320111023120 its reverse (213201110231), we get a palindrome (1533312133351).

The spelling of 1320111023120 in words is "one trillion, three hundred twenty billion, one hundred eleven million, twenty-three thousand, one hundred twenty".