12012313200 has 120 divisors (see below), whose sum is σ = 38853429888. Its totient is φ = 3172151040.

The previous prime is 12012313177. The next prime is 12012313249. The reversal of 12012313200 is 231321021.

It is a tau number, because it is divible by the number of its divisors (120).

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 12012313200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75007 + ... + 172193.

Almost surely, 2^12012313200 is an apocalyptic number.

12012313200 is a gapful number since it is divisible by the number (10) 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 12012313200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19426714944).

12012313200 is an abundant number, since it is smaller than the sum of its proper divisors (26841116688).

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

12012313200 is a wasteful number, since it uses less digits than its factorization.

12012313200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97311 (or 97300 counting only the distinct ones).

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

Adding to 12012313200 its reverse (231321021), we get a palindrome (12243634221).

The spelling of 12012313200 in words is "twelve billion, twelve million, three hundred thirteen thousand, two hundred".