21313321222 has 8 divisors (see below), whose sum is σ = 31984474176. Its totient is φ = 10651829832.

The previous prime is 21313321181. The next prime is 21313321259. The reversal of 21313321222 is 22212331312.

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 = 21313321193 and 21313321202.

It is a congruent number.

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, 2409873 + ... + 2418700.

It is an arithmetic number, because the mean of its divisors is an integer number (3998059272).

Almost surely, 2^21313321222 is an apocalyptic number.

21313321222 is a deficient number, since it is larger than the sum of its proper divisors (10671152954).

21313321222 is a wasteful number, since it uses less digits than its factorization.

21313321222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4830782.

The product of its digits is 864, while the sum is 22.

Adding to 21313321222 its reverse (22212331312), we get a palindrome (43525652534).

The spelling of 21313321222 in words is "twenty-one billion, three hundred thirteen million, three hundred twenty-one thousand, two hundred twenty-two".