21331330222 has 16 divisors (see below), whose sum is σ = 32048848800. Its totient is φ = 10648397088.

The previous prime is 21331330217. The next prime is 21331330231. The reversal of 21331330222 is 22203313312.

It is a junction number, because it is equal to n+sod(n) for n = 21331330193 and 21331330202.

It is a congruent number.

It is an unprimeable number.

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, 3948279 + ... + 3953677.

It is an arithmetic number, because the mean of its divisors is an integer number (2003053050).

Almost surely, 2^21331330222 is an apocalyptic number.

21331330222 is a deficient number, since it is larger than the sum of its proper divisors (10717518578).

21331330222 is a wasteful number, since it uses less digits than its factorization.

21331330222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8235.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21331330222 its reverse (22203313312), we get a palindrome (43534643534).

The spelling of 21331330222 in words is "twenty-one billion, three hundred thirty-one million, three hundred thirty thousand, two hundred twenty-two".