12111111301320 has 96 divisors (see below), whose sum is σ = 40630825048320. Its totient is φ = 3125448074880.

The previous prime is 12111111301253. The next prime is 12111111301339. The reversal of 12111111301320 is 2310311111121.

12111111301320 is a `hidden beast` number, since 1 + 21 + 1 + 11 + 11 + 301 + 320 = 666.

It is a super-2 number, since 2×12111111301320² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12111111301293 and 12111111301302.

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, 542601354 + ... + 542623673.

It is an arithmetic number, because the mean of its divisors is an integer number (423237760920).

Almost surely, 2^{12111111301320} is an apocalyptic number.

12111111301320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111111301320 is an abundant number, since it is smaller than the sum of its proper divisors (28519713747000).

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

12111111301320 is a wasteful number, since it uses less digits than its factorization.

12111111301320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085225075 (or 1085225068 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 12111111301320 its reverse (2310311111121), we get a palindrome (14421422412441).

The spelling of 12111111301320 in words is "twelve trillion, one hundred eleven billion, one hundred eleven million, three hundred one thousand, three hundred twenty".