12303223220 has 12 divisors (see below), whose sum is σ = 25836768804. Its totient is φ = 4921289280.

The previous prime is 12303223201. The next prime is 12303223249. The reversal of 12303223220 is 2232230321.

12303223220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3184119184 + 9119104036 = 56428^2 + 95494^2 .

It is a super-2 number, since 2×12303223220² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 615161161 = 12303223220 / (1 + 2 + 3 + 0 + 3 + 2 + 2 + 3 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 12303223192 and 12303223201.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 307580561 + ... + 307580600.

It is an arithmetic number, because the mean of its divisors is an integer number (2153064067).

Almost surely, 2^12303223220 is an apocalyptic number.

12303223220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12303223220 is an abundant number, since it is smaller than the sum of its proper divisors (13533545584).

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

12303223220 is a wasteful number, since it uses less digits than its factorization.

12303223220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615161170 (or 615161168 counting only the distinct ones).

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

Adding to 12303223220 its reverse (2232230321), we get a palindrome (14535453541).

The spelling of 12303223220 in words is "twelve billion, three hundred three million, two hundred twenty-three thousand, two hundred twenty".