12233221220 has 48 divisors (see below), whose sum is σ = 28147694400. Its totient is φ = 4429000320.

The previous prime is 12233221213. The next prime is 12233221223. The reversal of 12233221220 is 2212233221.

It is a happy number.

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 = 12233221192 and 12233221201.

It is not an unprimeable number, because it can be changed into a prime (12233221223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71030 + ... + 171789.

It is an arithmetic number, because the mean of its divisors is an integer number (586410300).

Almost surely, 2^12233221220 is an apocalyptic number.

12233221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12233221220 is an abundant number, since it is smaller than the sum of its proper divisors (15914473180).

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

12233221220 is a wasteful number, since it uses less digits than its factorization.

12233221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243068 (or 243066 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 12233221220 its reverse (2212233221), we get a palindrome (14445454441).

The spelling of 12233221220 in words is "twelve billion, two hundred thirty-three million, two hundred twenty-one thousand, two hundred twenty".