1321321222 has 8 divisors (see below), whose sum is σ = 2134442016. Its totient is φ = 609840552.

The previous prime is 1321321219. The next prime is 1321321223. The reversal of 1321321222 is 2221231231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1321321222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321321223) 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 3 ways as a sum of consecutive naturals, for example, 25409998 + ... + 25410049.

It is an arithmetic number, because the mean of its divisors is an integer number (266805252).

Almost surely, 2^1321321222 is an apocalyptic number.

1321321222 is a deficient number, since it is larger than the sum of its proper divisors (813120794).

1321321222 is a wasteful number, since it uses less digits than its factorization.

1321321222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50820062.

The product of its digits is 288, while the sum is 19.

The square root of 1321321222 is about 36349.9824209036. The cubic root of 1321321222 is about 1097.3271807209.

Adding to 1321321222 its reverse (2221231231), we get a palindrome (3542552453).

The spelling of 1321321222 in words is "one billion, three hundred twenty-one million, three hundred twenty-one thousand, two hundred twenty-two".