12012040000 has 70 divisors (see below), whose sum is σ = 29786054474. Its totient is φ = 4804800000.

The previous prime is 12012039997. The next prime is 12012040009. The reversal of 12012040000 is 4021021.

It can be written as a sum of positive squares in 5 ways, for example, as 6295470336 + 5716569664 = 79344^2 + 75608^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012040009) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 110151 + ... + 190150.

Almost surely, 2^12012040000 is an apocalyptic number.

12012040000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12012040000 is an abundant number, since it is smaller than the sum of its proper divisors (17774014474).

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

12012040000 is an frugal number, since it uses more digits than its factorization.

12012040000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300333 (or 300308 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 12012040000 its reverse (4021021), we get a palindrome (12016061021).

The spelling of 12012040000 in words is "twelve billion, twelve million, forty thousand".