13221321222 has 32 divisors (see below), whose sum is σ = 27189388512. Its totient is φ = 4282930944.

The previous prime is 13221321221. The next prime is 13221321227. The reversal of 13221321222 is 22212312231.

It is a super-3 number, since 3×13221321222³ (a number of 31 digits) contains 333 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13221321221) 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, 155508 + ... + 225000.

It is an arithmetic number, because the mean of its divisors is an integer number (849668391).

Almost surely, 2^13221321222 is an apocalyptic number.

13221321222 is an abundant number, since it is smaller than the sum of its proper divisors (13968067290).

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

13221321222 is a wasteful number, since it uses less digits than its factorization.

13221321222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70392.

The product of its digits is 576, while the sum is 21.

Adding to 13221321222 its reverse (22212312231), we get a palindrome (35433633453).

The spelling of 13221321222 in words is "thirteen billion, two hundred twenty-one million, three hundred twenty-one thousand, two hundred twenty-two".