21422200122321 has 8 divisors (see below), whose sum is σ = 28562969184384. Its totient is φ = 14281448904240.

The previous prime is 21422200122247. The next prime is 21422200122391. The reversal of 21422200122321 is 12322100222412.

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

It is not a de Polignac number, because 21422200122321 - 2⁹ = 21422200121809 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21422200122291 and 21422200122300.

It is not an unprimeable number, because it can be changed into a prime (21422200122391) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1349785 + ... + 6683286.

It is an arithmetic number, because the mean of its divisors is an integer number (3570371148048).

Almost surely, 2^{21422200122321} is an apocalyptic number.

It is an amenable number.

21422200122321 is a deficient number, since it is larger than the sum of its proper divisors (7140769062063).

21422200122321 is an equidigital number, since it uses as much as digits as its factorization.

21422200122321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8921991.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 21422200122321 its reverse (12322100222412), we get a palindrome (33744300344733).

The spelling of 21422200122321 in words is "twenty-one trillion, four hundred twenty-two billion, two hundred million, one hundred twenty-two thousand, three hundred twenty-one".