22221323210 has 8 divisors (see below), whose sum is σ = 39998381796. Its totient is φ = 8888529280.

The previous prime is 22221323191. The next prime is 22221323227. The reversal of 22221323210 is 1232312222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18595958689 + 3625364521 = 136367^2 + 60211^2 .

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

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, 1111066151 + ... + 1111066170.

Almost surely, 2^22221323210 is an apocalyptic number.

22221323210 is a deficient number, since it is larger than the sum of its proper divisors (17777058586).

22221323210 is a wasteful number, since it uses less digits than its factorization.

22221323210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2222132328.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 22221323210 its reverse (1232312222), we get a palindrome (23453635432).

The spelling of 22221323210 in words is "twenty-two billion, two hundred twenty-one million, three hundred twenty-three thousand, two hundred ten".