21321312202322 has 64 divisors (see below), whose sum is σ = 38339418700800. Its totient is φ = 8778350940480.

The previous prime is 21321312202297. The next prime is 21321312202381. The reversal of 21321312202322 is 22320221312312.

It is a junction number, because it is equal to n+sod(n) for n = 21321312202291 and 21321312202300.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 21305804 + ... + 22284072.

It is an arithmetic number, because the mean of its divisors is an integer number (599053417200).

Almost surely, 2^{21321312202322} is an apocalyptic number.

21321312202322 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21321312202322 is a deficient number, since it is larger than the sum of its proper divisors (17018106498478).

21321312202322 is a wasteful number, since it uses less digits than its factorization.

21321312202322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980591.

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 21321312202322 its reverse (22320221312312), we get a palindrome (43641533514634).

The spelling of 21321312202322 in words is "twenty-one trillion, three hundred twenty-one billion, three hundred twelve million, two hundred two thousand, three hundred twenty-two".