22121424224 has 12 divisors (see below), whose sum is σ = 43551554004. Its totient is φ = 11060712096.

The previous prime is 22121424211. The next prime is 22121424229. The reversal of 22121424224 is 42242412122.

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

It is a junction number, because it is equal to n+sod(n) for n = 22121424193 and 22121424202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121424229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 345647222 + ... + 345647285.

It is an arithmetic number, because the mean of its divisors is an integer number (3629296167).

Almost surely, 2^22121424224 is an apocalyptic number.

It is an amenable number.

22121424224 is a deficient number, since it is larger than the sum of its proper divisors (21430129780).

22121424224 is an equidigital number, since it uses as much as digits as its factorization.

22121424224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691294517 (or 691294509 counting only the distinct ones).

The product of its digits is 4096, while the sum is 26.

Adding to 22121424224 its reverse (42242412122), we get a palindrome (64363836346).

The spelling of 22121424224 in words is "twenty-two billion, one hundred twenty-one million, four hundred twenty-four thousand, two hundred twenty-four".