1123000203200 has 84 divisors (see below), whose sum is σ = 2769252414240. Its totient is φ = 448229591040.

The previous prime is 1123000203197. The next prime is 1123000203203. The reversal of 1123000203200 is 23020003211.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1123000203197) and next prime (1123000203203).

It is a super-2 number, since 2×1123000203200² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123000203203) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 17165 + ... + 1498764.

Almost surely, 2^{1123000203200} is an apocalyptic number.

1123000203200 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 1123000203200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1384626207120).

1123000203200 is an abundant number, since it is smaller than the sum of its proper divisors (1646252211040).

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

1123000203200 is a wasteful number, since it uses less digits than its factorization.

1123000203200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1516414 (or 1516399 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 1123000203200 its reverse (23020003211), we get a palindrome (1146020206411).

The spelling of 1123000203200 in words is "one trillion, one hundred twenty-three billion, two hundred three thousand, two hundred".