1323021222 has 16 divisors (see below), whose sum is σ = 2940047280. Its totient is φ = 441007056.

The previous prime is 1323021211. The next prime is 1323021229. The reversal of 1323021222 is 2221203231.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1323021195 and 1323021204.

It is a congruent 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 7 ways as a sum of consecutive naturals, for example, 12250143 + ... + 12250250.

It is an arithmetic number, because the mean of its divisors is an integer number (183752955).

Almost surely, 2^1323021222 is an apocalyptic number.

1323021222 is an abundant number, since it is smaller than the sum of its proper divisors (1617026058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1323021222 is a wasteful number, since it uses less digits than its factorization.

1323021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24500404 (or 24500398 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1323021222 is about 36373.3586846197. The cubic root of 1323021222 is about 1097.7975828006.

Adding to 1323021222 its reverse (2221203231), we get a palindrome (3544224453).

The spelling of 1323021222 in words is "one billion, three hundred twenty-three million, twenty-one thousand, two hundred twenty-two".