1123221333220 has 96 divisors (see below), whose sum is σ = 2816129691648. Its totient is φ = 367942684032.

The previous prime is 1123221333209. The next prime is 1123221333239. The reversal of 1123221333220 is 223331223211.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2645737 + ... + 3040783.

It is an arithmetic number, because the mean of its divisors is an integer number (29334684288).

Almost surely, 2^{1123221333220} is an apocalyptic number.

1123221333220 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 1123221333220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1408064845824).

1123221333220 is an abundant number, since it is smaller than the sum of its proper divisors (1692908358428).

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

1123221333220 is a wasteful number, since it uses less digits than its factorization.

1123221333220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395969 (or 395967 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 25.

Adding to 1123221333220 its reverse (223331223211), we get a palindrome (1346552556431).

The spelling of 1123221333220 in words is "one trillion, one hundred twenty-three billion, two hundred twenty-one million, three hundred thirty-three thousand, two hundred twenty".