21331113322 has 4 divisors (see below), whose sum is σ = 31996669986. Its totient is φ = 10665556660.

The previous prime is 21331113317. The next prime is 21331113367. The reversal of 21331113322 is 22331113312.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11525954881 + 9805158441 = 107359^2 + 99021^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21331113293 and 21331113302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5332778329 + ... + 5332778332.

Almost surely, 2^21331113322 is an apocalyptic number.

21331113322 is a deficient number, since it is larger than the sum of its proper divisors (10665556664).

21331113322 is a wasteful number, since it uses less digits than its factorization.

21331113322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10665556663.

The product of its digits is 648, while the sum is 22.

Adding to 21331113322 its reverse (22331113312), we get a palindrome (43662226634).

The spelling of 21331113322 in words is "twenty-one billion, three hundred thirty-one million, one hundred thirteen thousand, three hundred twenty-two".