12012010320 has 40 divisors (see below), whose sum is σ = 37237232736. Its totient is φ = 3203202688.

The previous prime is 12012010303. The next prime is 12012010357. The reversal of 12012010320 is 2301021021.

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 (12).

It is a junction number, because it is equal to n+sod(n) for n = 12012010296 and 12012010305.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25024782 + ... + 25025261.

Almost surely, 2^12012010320 is an apocalyptic number.

12012010320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12012010320 is an abundant number, since it is smaller than the sum of its proper divisors (25225222416).

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

12012010320 is a wasteful number, since it uses less digits than its factorization.

12012010320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50050059 (or 50050053 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 12012010320 its reverse (2301021021), we get a palindrome (14313031341).

The spelling of 12012010320 in words is "twelve billion, twelve million, ten thousand, three hundred twenty".