21321301322 has 8 divisors (see below), whose sum is σ = 31984510500. Its totient is φ = 10659797824.

The previous prime is 21321301291. The next prime is 21321301399. The reversal of 21321301322 is 22310312312.

It can be written as a sum of positive squares in 2 ways, for example, as 20366429521 + 954871801 = 142711^2 + 30901^2 .

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 = 21321301294 and 21321301303.

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, 394697 + ... + 445452.

Almost surely, 2^21321301322 is an apocalyptic number.

21321301322 is a deficient number, since it is larger than the sum of its proper divisors (10663209178).

21321301322 is a wasteful number, since it uses less digits than its factorization.

21321301322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 852840.

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

Adding to 21321301322 its reverse (22310312312), we get a palindrome (43631613634).

The spelling of 21321301322 in words is "twenty-one billion, three hundred twenty-one million, three hundred one thousand, three hundred twenty-two".