1232223220 has 24 divisors (see below), whose sum is σ = 2596512744. Its totient is φ = 491204736.

The previous prime is 1232223199. The next prime is 1232223221. The reversal of 1232223220 is 223222321.

It can be written as a sum of positive squares in 4 ways, for example, as 257409936 + 974813284 = 16044^2 + 31222^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232223221) 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 7 ways as a sum of consecutive naturals, for example, 99279 + ... + 110998.

It is an arithmetic number, because the mean of its divisors is an integer number (108188031).

Almost surely, 2^1232223220 is an apocalyptic number.

1232223220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1232223220 is an abundant number, since it is smaller than the sum of its proper divisors (1364289524).

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

1232223220 is a wasteful number, since it uses less digits than its factorization.

1232223220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210579 (or 210577 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 1232223220 is about 35103.0371905338. The cubic root of 1232223220 is about 1072.0864230559.

Adding to 1232223220 its reverse (223222321), we get a palindrome (1455445541).

The spelling of 1232223220 in words is "one billion, two hundred thirty-two million, two hundred twenty-three thousand, two hundred twenty".