21222104021443 has 8 divisors (see below), whose sum is σ = 22896818621936. Its totient is φ = 19553424429600.

The previous prime is 21222104021413. The next prime is 21222104021491. The reversal of 21222104021443 is 34412040122212.

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

It is a cyclic number.

It is not a de Polignac number, because 21222104021443 - 2³³ = 21213514086851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21222104021413) 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, 1508744853 + ... + 1508758918.

It is an arithmetic number, because the mean of its divisors is an integer number (2862102327742).

Almost surely, 2^{21222104021443} is an apocalyptic number.

21222104021443 is a deficient number, since it is larger than the sum of its proper divisors (1674714600493).

21222104021443 is a wasteful number, since it uses less digits than its factorization.

21222104021443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3017504325.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 21222104021443 its reverse (34412040122212), we get a palindrome (55634144143655).

The spelling of 21222104021443 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred four million, twenty-one thousand, four hundred forty-three".