21331210222 has 8 divisors (see below), whose sum is σ = 36567788976. Its totient is φ = 9141947232.

The previous prime is 21331210171. The next prime is 21331210223. The reversal of 21331210222 is 22201213312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21331210222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21331210223) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 761828923 + ... + 761828950.

It is an arithmetic number, because the mean of its divisors is an integer number (4570973622).

Almost surely, 2^21331210222 is an apocalyptic number.

21331210222 is a deficient number, since it is larger than the sum of its proper divisors (15236578754).

21331210222 is a wasteful number, since it uses less digits than its factorization.

21331210222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1523657882.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21331210222 its reverse (22201213312), we get a palindrome (43532423534).

The spelling of 21331210222 in words is "twenty-one billion, three hundred thirty-one million, two hundred ten thousand, two hundred twenty-two".