12012011320 has 32 divisors (see below), whose sum is σ = 27038733120. Its totient is φ = 4802723200.

The previous prime is 12012011293. The next prime is 12012011339. The reversal of 12012011320 is 2311021021.

It is a self number, because there is not a number n which added to its sum of digits gives 12012011320.

It is a congruent number.

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, 30174 + ... + 157906.

It is an arithmetic number, because the mean of its divisors is an integer number (844960410).

Almost surely, 2^12012011320 is an apocalyptic number.

12012011320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12012011320 is an abundant number, since it is smaller than the sum of its proper divisors (15026721800).

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

12012011320 is a wasteful number, since it uses less digits than its factorization.

12012011320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130095 (or 130091 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 12012011320 its reverse (2311021021), we get a palindrome (14323032341).

The spelling of 12012011320 in words is "twelve billion, twelve million, eleven thousand, three hundred twenty".