12011302320 has 40 divisors (see below), whose sum is σ = 37235037936. Its totient is φ = 3203013888.

The previous prime is 12011302319. The next prime is 12011302337. The reversal of 12011302320 is 2320311021.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 12011302320.

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, 25023307 + ... + 25023786.

Almost surely, 2^12011302320 is an apocalyptic number.

12011302320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12011302320 is an abundant number, since it is smaller than the sum of its proper divisors (25223735616).

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

12011302320 is a wasteful number, since it uses less digits than its factorization.

12011302320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50047109 (or 50047103 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 12011302320 its reverse (2320311021), we get a palindrome (14331613341).

The spelling of 12011302320 in words is "twelve billion, eleven million, three hundred two thousand, three hundred twenty".