1223321012 has 6 divisors (see below), whose sum is σ = 2140811778. Its totient is φ = 611660504.

The previous prime is 1223320993. The next prime is 1223321017. The reversal of 1223321012 is 2101233221.

It can be written as a sum of positive squares in only one way, i.e., 741255076 + 482065936 = 27226^2 + 21956^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223321017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152915123 + ... + 152915130.

It is an arithmetic number, because the mean of its divisors is an integer number (356801963).

Almost surely, 2^1223321012 is an apocalyptic number.

It is an amenable number.

1223321012 is a deficient number, since it is larger than the sum of its proper divisors (917490766).

1223321012 is a wasteful number, since it uses less digits than its factorization.

1223321012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305830257 (or 305830255 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1223321012 is about 34976.0062328448. The cubic root of 1223321012 is about 1069.4984145715.

Adding to 1223321012 its reverse (2101233221), we get a palindrome (3324554233).

The spelling of 1223321012 in words is "one billion, two hundred twenty-three million, three hundred twenty-one thousand, twelve".