12120444312 has 64 divisors (see below), whose sum is σ = 31185073920. Its totient is φ = 3922743168.

The previous prime is 12120444289. The next prime is 12120444331. The reversal of 12120444312 is 21344402121.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 418443 + ... + 446469.

It is an arithmetic number, because the mean of its divisors is an integer number (487266780).

Almost surely, 2^12120444312 is an apocalyptic number.

12120444312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12120444312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15592536960).

12120444312 is an abundant number, since it is smaller than the sum of its proper divisors (19064629608).

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

12120444312 is a wasteful number, since it uses less digits than its factorization.

12120444312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28560 (or 28556 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 12120444312 its reverse (21344402121), we get a palindrome (33464846433).

The spelling of 12120444312 in words is "twelve billion, one hundred twenty million, four hundred forty-four thousand, three hundred twelve".