12102440322 has 96 divisors (see below), whose sum is σ = 28795338432. Its totient is φ = 3380299776.

The previous prime is 12102440309. The next prime is 12102440323. The reversal of 12102440322 is 22304420121.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (12102440323) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2364438 + ... + 2369550.

It is an arithmetic number, because the mean of its divisors is an integer number (299951442).

Almost surely, 2^12102440322 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12102440322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14397669216).

12102440322 is an abundant number, since it is smaller than the sum of its proper divisors (16692898110).

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

12102440322 is a wasteful number, since it uses less digits than its factorization.

12102440322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5312 (or 5305 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 12102440322 its reverse (22304420121), we get a palindrome (34406860443).

The spelling of 12102440322 in words is "twelve billion, one hundred two million, four hundred forty thousand, three hundred twenty-two".