21203320210322 has 16 divisors (see below), whose sum is σ = 31903623624600. Its totient is φ = 10568807861760.

The previous prime is 21203320210253. The next prime is 21203320210327. The reversal of 21203320210322 is 22301202330212.

It can be written as a sum of positive squares in 4 ways, for example, as 17480083684561 + 3723236525761 = 4180919^2 + 1929569^2 .

It is not an unprimeable number, because it can be changed into a prime (21203320210327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5744129 + ... + 8683412.

Almost surely, 2^{21203320210322} is an apocalyptic number.

21203320210322 is a deficient number, since it is larger than the sum of its proper divisors (10700303414278).

21203320210322 is a wasteful number, since it uses less digits than its factorization.

21203320210322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14429821.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 21203320210322 its reverse (22301202330212), we get a palindrome (43504522540534).

The spelling of 21203320210322 in words is "twenty-one trillion, two hundred three billion, three hundred twenty million, two hundred ten thousand, three hundred twenty-two".