22021224224 has 24 divisors (see below), whose sum is σ = 43359649200. Its totient is φ = 11009249856.

The previous prime is 22021224163. The next prime is 22021224287. The reversal of 22021224224 is 42242212022.

It is a self number, because there is not a number n which added to its sum of digits gives 22021224224.

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, 251327 + ... + 327425.

It is an arithmetic number, because the mean of its divisors is an integer number (1806652050).

Almost surely, 2^22021224224 is an apocalyptic number.

It is an amenable number.

22021224224 is a deficient number, since it is larger than the sum of its proper divisors (21338424976).

22021224224 is an equidigital number, since it uses as much as digits as its factorization.

22021224224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85152 (or 85144 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 22021224224 its reverse (42242212022), we get a palindrome (64263436246).

The spelling of 22021224224 in words is "twenty-two billion, twenty-one million, two hundred twenty-four thousand, two hundred twenty-four".