21323331222 has 8 divisors (see below), whose sum is σ = 42646662456. Its totient is φ = 7107777072.

The previous prime is 21323331181. The next prime is 21323331233. The reversal of 21323331222 is 22213332312.

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

21323331222 is an admirable number.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 21323331192 and 21323331201.

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, 1776944263 + ... + 1776944274.

It is an arithmetic number, because the mean of its divisors is an integer number (5330832807).

Almost surely, 2^21323331222 is an apocalyptic number.

21323331222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21323331222 is a wasteful number, since it uses less digits than its factorization.

21323331222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3553888542.

The product of its digits is 2592, while the sum is 24.

Adding to 21323331222 its reverse (22213332312), we get a palindrome (43536663534).

The spelling of 21323331222 in words is "twenty-one billion, three hundred twenty-three million, three hundred thirty-one thousand, two hundred twenty-two".