22333222212 has 96 divisors (see below), whose sum is σ = 63310894080. Its totient is φ = 5985187200.

The previous prime is 22333222189. The next prime is 22333222259. The reversal of 22333222212 is 21222233322.

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

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 91923 + ... + 230469.

It is an arithmetic number, because the mean of its divisors is an integer number (659488480).

Almost surely, 2^22333222212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22333222212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31655447040).

22333222212 is an abundant number, since it is smaller than the sum of its proper divisors (40977671868).

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

22333222212 is a wasteful number, since it uses less digits than its factorization.

22333222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138681 (or 138679 counting only the distinct ones).

The product of its digits is 3456, while the sum is 24.

Adding to 22333222212 its reverse (21222233322), we get a palindrome (43555455534).

The spelling of 22333222212 in words is "twenty-two billion, three hundred thirty-three million, two hundred twenty-two thousand, two hundred twelve".