1223205224 has 8 divisors (see below), whose sum is σ = 2293509810. Its totient is φ = 611602608.

The previous prime is 1223205197. The next prime is 1223205227. The reversal of 1223205224 is 4225023221.

It can be written as a sum of positive squares in only one way, i.e., 1161582724 + 61622500 = 34082^2 + 7850^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 1223205224.

It is not an unprimeable number, because it can be changed into a prime (1223205227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76450319 + ... + 76450334.

Almost surely, 2^1223205224 is an apocalyptic number.

It is an amenable number.

1223205224 is a deficient number, since it is larger than the sum of its proper divisors (1070304586).

1223205224 is a wasteful number, since it uses less digits than its factorization.

1223205224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152900659 (or 152900655 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 1223205224 is about 34974.3509446566. The cubic root of 1223205224 is about 1069.4646706378.

Adding to 1223205224 its reverse (4225023221), we get a palindrome (5448228445).

The spelling of 1223205224 in words is "one billion, two hundred twenty-three million, two hundred five thousand, two hundred twenty-four".