1232211228 has 24 divisors (see below), whose sum is σ = 2879388288. Its totient is φ = 410132976.

The previous prime is 1232211209. The next prime is 1232211229. The reversal of 1232211228 is 8221122321.

It is a junction number, because it is equal to n+sod(n) for n = 1232211198 and 1232211207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1232211229) 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 7 ways as a sum of consecutive naturals, for example, 66976 + ... + 83367.

It is an arithmetic number, because the mean of its divisors is an integer number (119974512).

Almost surely, 2^1232211228 is an apocalyptic number.

It is an amenable number.

1232211228 is an abundant number, since it is smaller than the sum of its proper divisors (1647177060).

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

1232211228 is a wasteful number, since it uses less digits than its factorization.

1232211228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151033 (or 151031 counting only the distinct ones).

The product of its digits is 768, while the sum is 24.

The square root of 1232211228 is about 35102.8663786877. The cubic root of 1232211228 is about 1072.0829451952.

Adding to 1232211228 its reverse (8221122321), we get a palindrome (9453333549).

The spelling of 1232211228 in words is "one billion, two hundred thirty-two million, two hundred eleven thousand, two hundred twenty-eight".