12111210320 has 80 divisors (see below), whose sum is σ = 30736782720. Its totient is φ = 4401446400.

The previous prime is 12111210301. The next prime is 12111210361. The reversal of 12111210320 is 2301211121.

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

It is a junction number, because it is equal to n+sod(n) for n = 12111210295 and 12111210304.

It is a congruent number.

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, 2057141 + ... + 2063019.

It is an arithmetic number, because the mean of its divisors is an integer number (384209784).

Almost surely, 2^12111210320 is an apocalyptic number.

12111210320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12111210320 is an abundant number, since it is smaller than the sum of its proper divisors (18625572400).

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

12111210320 is a wasteful number, since it uses less digits than its factorization.

12111210320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8244 (or 8238 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 12111210320 its reverse (2301211121), we get a palindrome (14412421441).

The spelling of 12111210320 in words is "twelve billion, one hundred eleven million, two hundred ten thousand, three hundred twenty".