21320212322 has 8 divisors (see below), whose sum is σ = 33663493200. Its totient is φ = 10099047924.

The previous prime is 21320212307. The next prime is 21320212327. The reversal of 21320212322 is 22321202312.

It is a happy number.

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 = 21320212294 and 21320212303.

It is not an unprimeable number, because it can be changed into a prime (21320212327) 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 3 ways as a sum of consecutive naturals, for example, 280529072 + ... + 280529147.

It is an arithmetic number, because the mean of its divisors is an integer number (4207936650).

Almost surely, 2^21320212322 is an apocalyptic number.

21320212322 is a deficient number, since it is larger than the sum of its proper divisors (12343280878).

21320212322 is a wasteful number, since it uses less digits than its factorization.

21320212322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561058240.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 21320212322 its reverse (22321202312), we get a palindrome (43641414634).

The spelling of 21320212322 in words is "twenty-one billion, three hundred twenty million, two hundred twelve thousand, three hundred twenty-two".