21222023222 has 8 divisors (see below), whose sum is σ = 31833847272. Its totient is φ = 10610740800.

The previous prime is 21222023213. The next prime is 21222023227. The reversal of 21222023222 is 22232022212.

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

It is a super-2 number, since 2×21222023222² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21222023194 and 21222023203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21222023227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16604 + ... + 206687.

It is an arithmetic number, because the mean of its divisors is an integer number (3979230909).

Almost surely, 2^21222023222 is an apocalyptic number.

21222023222 is a deficient number, since it is larger than the sum of its proper divisors (10611824050).

21222023222 is a wasteful number, since it uses less digits than its factorization.

21222023222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270814.

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 21222023222 its reverse (22232022212), we get a palindrome (43454045434).

The spelling of 21222023222 in words is "twenty-one billion, two hundred twenty-two million, twenty-three thousand, two hundred twenty-two".