12222352240 has 160 divisors (see below), whose sum is σ = 33312153600. Its totient is φ = 4168684800.

The previous prime is 12222352223. The next prime is 12222352271. The reversal of 12222352240 is 4225322221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5788785 + ... + 5790895.

It is an arithmetic number, because the mean of its divisors is an integer number (208200960).

Almost surely, 2^12222352240 is an apocalyptic number.

12222352240 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 12222352240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16656076800).

12222352240 is an abundant number, since it is smaller than the sum of its proper divisors (21089801360).

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

12222352240 is a wasteful number, since it uses less digits than its factorization.

12222352240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2356 (or 2336 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 12222352240 its reverse (4225322221), we get a palindrome (16447674461).

The spelling of 12222352240 in words is "twelve billion, two hundred twenty-two million, three hundred fifty-two thousand, two hundred forty".