1223055436 has 12 divisors (see below), whose sum is σ = 2142006328. Its totient is φ = 611053632.

The previous prime is 1223055419. The next prime is 1223055439. The reversal of 1223055436 is 6345503221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1223055398 and 1223055407.

It is not an unprimeable number, because it can be changed into a prime (1223055439) 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 3 ways as a sum of consecutive naturals, for example, 112686 + ... + 123061.

Almost surely, 2^1223055436 is an apocalyptic number.

It is an amenable number.

1223055436 is a deficient number, since it is larger than the sum of its proper divisors (918950892).

1223055436 is a wasteful number, since it uses less digits than its factorization.

1223055436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237048 (or 237046 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 31.

The square root of 1223055436 is about 34972.2094812438. The cubic root of 1223055436 is about 1069.4210149725.

Adding to 1223055436 its reverse (6345503221), we get a palindrome (7568558657).

The spelling of 1223055436 in words is "one billion, two hundred twenty-three million, fifty-five thousand, four hundred thirty-six".