12223045500 has 96 divisors (see below), whose sum is σ = 36265320000. Its totient is φ = 3197958400.

The previous prime is 12223045493. The next prime is 12223045511. The reversal of 12223045500 is 554032221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2626 + ... + 156374.

It is an arithmetic number, because the mean of its divisors is an integer number (377763750).

Almost surely, 2^12223045500 is an apocalyptic number.

12223045500 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 12223045500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18132660000).

12223045500 is an abundant number, since it is smaller than the sum of its proper divisors (24042274500).

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

12223045500 is a wasteful number, since it uses less digits than its factorization.

12223045500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153824 (or 153812 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 24.

Adding to 12223045500 its reverse (554032221), we get a palindrome (12777077721).

The spelling of 12223045500 in words is "twelve billion, two hundred twenty-three million, forty-five thousand, five hundred".