21331201322 has 8 divisors (see below), whose sum is σ = 32012318016. Its totient is φ = 10660428652.

The previous prime is 21331201303. The next prime is 21331201357. The reversal of 21331201322 is 22310213312.

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

It is a junction number, because it is equal to n+sod(n) for n = 21331201294 and 21331201303.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2580848 + ... + 2589099.

It is an arithmetic number, because the mean of its divisors is an integer number (4001539752).

Almost surely, 2^21331201322 is an apocalyptic number.

21331201322 is a deficient number, since it is larger than the sum of its proper divisors (10681116694).

21331201322 is a wasteful number, since it uses less digits than its factorization.

21331201322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5172012.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21331201322 its reverse (22310213312), we get a palindrome (43641414634).

The spelling of 21331201322 in words is "twenty-one billion, three hundred thirty-one million, two hundred one thousand, three hundred twenty-two".