12223303220 has 24 divisors (see below), whose sum is σ = 26089741608. Its totient is φ = 4809168000.

The previous prime is 12223303171. The next prime is 12223303223. The reversal of 12223303220 is 2230332221.

It can be written as a sum of positive squares in 4 ways, for example, as 20124196 + 12203179024 = 4486^2 + 110468^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 12223303192 and 12223303201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12223303223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5008331 + ... + 5010770.

It is an arithmetic number, because the mean of its divisors is an integer number (1087072567).

Almost surely, 2^12223303220 is an apocalyptic number.

12223303220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12223303220 is an abundant number, since it is smaller than the sum of its proper divisors (13866438388).

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

12223303220 is a wasteful number, since it uses less digits than its factorization.

12223303220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10019171 (or 10019169 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 12223303220 its reverse (2230332221), we get a palindrome (14453635441).

The spelling of 12223303220 in words is "twelve billion, two hundred twenty-three million, three hundred three thousand, two hundred twenty".