1323021225 has 12 divisors (see below), whose sum is σ = 2187395216. Its totient is φ = 705611280.

The previous prime is 1323021211. The next prime is 1323021229. The reversal of 1323021225 is 5221203231.

It is not a de Polignac number, because 1323021225 - 2⁷ = 1323021097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1323021229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8820067 + ... + 8820216.

Almost surely, 2^1323021225 is an apocalyptic number.

1323021225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1323021225 is a deficient number, since it is larger than the sum of its proper divisors (864373991).

1323021225 is a wasteful number, since it uses less digits than its factorization.

1323021225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17640296 (or 17640291 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 1323021225 is about 36373.3587258587. The cubic root of 1323021225 is about 1097.7975836303.

Adding to 1323021225 its reverse (5221203231), we get a palindrome (6544224456).

The spelling of 1323021225 in words is "one billion, three hundred twenty-three million, twenty-one thousand, two hundred twenty-five".