1123001332320 has 384 divisors, whose sum is σ = 4370608972800. Its totient is φ = 236603400192.

The previous prime is 1123001332319. The next prime is 1123001332379. The reversal of 1123001332320 is 232331003211.

It is a super-2 number, since 2×1123001332320² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2124366 + ... + 2599794.

It is an arithmetic number, because the mean of its divisors is an integer number (11381794200).

Almost surely, 2^{1123001332320} is an apocalyptic number.

1123001332320 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 1123001332320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2185304486400).

1123001332320 is an abundant number, since it is smaller than the sum of its proper divisors (3247607640480).

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

1123001332320 is a wasteful number, since it uses less digits than its factorization.

1123001332320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475510 (or 475502 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1123001332320 its reverse (232331003211), we get a palindrome (1355332335531).

The spelling of 1123001332320 in words is "one trillion, one hundred twenty-three billion, one million, three hundred thirty-two thousand, three hundred twenty".