1123321103220 has 96 divisors (see below), whose sum is σ = 3247408475136. Its totient is φ = 289831449600.

The previous prime is 1123321103173. The next prime is 1123321103227. The reversal of 1123321103220 is 223011233211.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123321103227) by changing a digit.

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, 9683160 + ... + 9798480.

It is an arithmetic number, because the mean of its divisors is an integer number (33827171616).

Almost surely, 2^{1123321103220} is an apocalyptic number.

1123321103220 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 1123321103220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1623704237568).

1123321103220 is an abundant number, since it is smaller than the sum of its proper divisors (2124087371916).

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

1123321103220 is a wasteful number, since it uses less digits than its factorization.

1123321103220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120601 (or 120599 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1123321103220 its reverse (223011233211), we get a palindrome (1346332336431).

The spelling of 1123321103220 in words is "one trillion, one hundred twenty-three billion, three hundred twenty-one million, one hundred three thousand, two hundred twenty".