1123440224220 has 144 divisors (see below), whose sum is σ = 3560232836160. Its totient is φ = 286212123648.

The previous prime is 1123440224209. The next prime is 1123440224303. The reversal of 1123440224220 is 224220443211.

It is a happy number.

1123440224220 is a `hidden beast` number, since 1 + 1 + 2 + 34 + 402 + 2 + 4 + 220 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3268392 + ... + 3595728.

It is an arithmetic number, because the mean of its divisors is an integer number (24723839140).

Almost surely, 2^{1123440224220} is an apocalyptic number.

1123440224220 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 1123440224220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1780116418080).

1123440224220 is an abundant number, since it is smaller than the sum of its proper divisors (2436792611940).

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

1123440224220 is a wasteful number, since it uses less digits than its factorization.

1123440224220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328204 (or 328199 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 1123440224220 its reverse (224220443211), we get a palindrome (1347660667431).

The spelling of 1123440224220 in words is "one trillion, one hundred twenty-three billion, four hundred forty million, two hundred twenty-four thousand, two hundred twenty".