1223445512 has 16 divisors (see below), whose sum is σ = 2295013200. Its totient is φ = 611442000.

The previous prime is 1223445491. The next prime is 1223445521. The reversal of 1223445512 is 2155443221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15962 + ... + 51977.

It is an arithmetic number, because the mean of its divisors is an integer number (143438325).

Almost surely, 2^1223445512 is an apocalyptic number.

It is an amenable number.

1223445512 is a deficient number, since it is larger than the sum of its proper divisors (1071567688).

1223445512 is a wasteful number, since it uses less digits than its factorization.

1223445512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70196 (or 70192 counting only the distinct ones).

The product of its digits is 9600, while the sum is 29.

The square root of 1223445512 is about 34977.7859791039. The cubic root of 1223445512 is about 1069.5346950557.

Adding to 1223445512 its reverse (2155443221), we get a palindrome (3378888733).

The spelling of 1223445512 in words is "one billion, two hundred twenty-three million, four hundred forty-five thousand, five hundred twelve".