12223028440 has 192 divisors, whose sum is σ = 33922679040. Its totient is φ = 3945231360.

The previous prime is 12223028423. The next prime is 12223028443. The reversal of 12223028440 is 4482032221.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 12223028399 and 12223028408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12223028443) 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, 2245402 + ... + 2250838.

It is an arithmetic number, because the mean of its divisors is an integer number (176680620).

Almost surely, 2^12223028440 is an apocalyptic number.

12223028440 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 12223028440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16961339520).

12223028440 is an abundant number, since it is smaller than the sum of its proper divisors (21699650600).

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

12223028440 is a wasteful number, since it uses less digits than its factorization.

12223028440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5530 (or 5519 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The spelling of 12223028440 in words is "twelve billion, two hundred twenty-three million, twenty-eight thousand, four hundred forty".