12012522320 has 80 divisors (see below), whose sum is σ = 30526046208. Its totient is φ = 4376463360.

The previous prime is 12012522311. The next prime is 12012522341. The reversal of 12012522320 is 2322521021.

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

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12012522292 and 12012522301.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100304 + ... + 184623.

Almost surely, 2^12012522320 is an apocalyptic number.

12012522320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12012522320 is an abundant number, since it is smaller than the sum of its proper divisors (18513523888).

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

12012522320 is a wasteful number, since it uses less digits than its factorization.

12012522320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284988 (or 284982 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The spelling of 12012522320 in words is "twelve billion, twelve million, five hundred twenty-two thousand, three hundred twenty".