22213021224 has 64 divisors (see below), whose sum is σ = 56653914240. Its totient is φ = 7255189760.

The previous prime is 22213021169. The next prime is 22213021261. The reversal of 22213021224 is 42212031222.

It is a self number, because there is not a number n which added to its sum of digits gives 22213021224.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1002829 + ... + 1024739.

It is an arithmetic number, because the mean of its divisors is an integer number (885217410).

Almost surely, 2^22213021224 is an apocalyptic number.

22213021224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22213021224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28326957120).

22213021224 is an abundant number, since it is smaller than the sum of its proper divisors (34440893016).

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

22213021224 is a wasteful number, since it uses less digits than its factorization.

22213021224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22770 (or 22766 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 22213021224 its reverse (42212031222), we get a palindrome (64425052446).

The spelling of 22213021224 in words is "twenty-two billion, two hundred thirteen million, twenty-one thousand, two hundred twenty-four".