12322212240 has 160 divisors (see below), whose sum is σ = 41181114240. Its totient is φ = 3029925888.

The previous prime is 12322212233. The next prime is 12322212241. The reversal of 12322212240 is 4221222321.

It is not an unprimeable number, because it can be changed into a prime (12322212241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4394679 + ... + 4397481.

It is an arithmetic number, because the mean of its divisors is an integer number (257381964).

Almost surely, 2^12322212240 is an apocalyptic number.

12322212240 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 12322212240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20590557120).

12322212240 is an abundant number, since it is smaller than the sum of its proper divisors (28858902000).

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

12322212240 is a wasteful number, since it uses less digits than its factorization.

12322212240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4241 (or 4235 counting only the distinct ones).

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

Adding to 12322212240 its reverse (4221222321), we get a palindrome (16543434561).

The spelling of 12322212240 in words is "twelve billion, three hundred twenty-two million, two hundred twelve thousand, two hundred forty".