12262203240 has 128 divisors (see below), whose sum is σ = 42094944000. Its totient is φ = 2799249408.

The previous prime is 12262203229. The next prime is 12262203257. The reversal of 12262203240 is 4230226221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 12262203240.

It is an unprimeable number.

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, 687556 + ... + 705164.

It is an arithmetic number, because the mean of its divisors is an integer number (328866750).

Almost surely, 2^12262203240 is an apocalyptic number.

12262203240 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 12262203240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21047472000).

12262203240 is an abundant number, since it is smaller than the sum of its proper divisors (29832740760).

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

12262203240 is a wasteful number, since it uses less digits than its factorization.

12262203240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18459 (or 18455 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 12262203240 its reverse (4230226221), we get a palindrome (16492429461).

The spelling of 12262203240 in words is "twelve billion, two hundred sixty-two million, two hundred three thousand, two hundred forty".