1123321312300 has 72 divisors (see below), whose sum is σ = 2660846569920. Its totient is φ = 408228763200.

The previous prime is 1123321312283. The next prime is 1123321312361. The reversal of 1123321312300 is 32131233211.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1475871 + ... + 2103529.

It is an arithmetic number, because the mean of its divisors is an integer number (36956202360).

Almost surely, 2^{1123321312300} is an apocalyptic number.

1123321312300 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 1123321312300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1330423284960).

1123321312300 is an abundant number, since it is smaller than the sum of its proper divisors (1537525257620).

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

1123321312300 is a wasteful number, since it uses less digits than its factorization.

1123321312300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 629311 (or 629304 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 1123321312300 its reverse (32131233211), we get a palindrome (1155452545511).

The spelling of 1123321312300 in words is "one trillion, one hundred twenty-three billion, three hundred twenty-one million, three hundred twelve thousand, three hundred".