1223223321 has 16 divisors (see below), whose sum is σ = 1727751168. Its totient is φ = 767136000.

The previous prime is 1223223319. The next prime is 1223223347. The reversal of 1223223321 is 1233223221.

It is a happy number.

It is not a de Polignac number, because 1223223321 - 2¹ = 1223223319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1223223311) 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 15 ways as a sum of consecutive naturals, for example, 129096 + ... + 138246.

It is an arithmetic number, because the mean of its divisors is an integer number (107984448).

Almost surely, 2^1223223321 is an apocalyptic number.

It is an amenable number.

1223223321 is a deficient number, since it is larger than the sum of its proper divisors (504527847).

1223223321 is a wasteful number, since it uses less digits than its factorization.

1223223321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11792.

The product of its digits is 864, while the sum is 21.

The square root of 1223223321 is about 34974.6096618676. The cubic root of 1223223321 is about 1069.4699447614.

Adding to 1223223321 its reverse (1233223221), we get a palindrome (2456446542).

It can be divided in two parts, 12232 and 23321, that added together give a palindrome (35553).

The spelling of 1223223321 in words is "one billion, two hundred twenty-three million, two hundred twenty-three thousand, three hundred twenty-one".