12204400340 has 96 divisors (see below), whose sum is σ = 29465856000. Its totient is φ = 4199368320.

The previous prime is 12204400303. The next prime is 12204400349. The reversal of 12204400340 is 4300440221.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12204400349) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 5846777 + ... + 5848863.

It is an arithmetic number, because the mean of its divisors is an integer number (306936000).

Almost surely, 2^12204400340 is an apocalyptic number.

12204400340 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 12204400340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14732928000).

12204400340 is an abundant number, since it is smaller than the sum of its proper divisors (17261455660).

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

12204400340 is a wasteful number, since it uses less digits than its factorization.

12204400340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3525 (or 3523 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 12204400340 its reverse (4300440221), we get a palindrome (16504840561).

The spelling of 12204400340 in words is "twelve billion, two hundred four million, four hundred thousand, three hundred forty".