22224644421 has 32 divisors (see below), whose sum is σ = 35187129600. Its totient is φ = 12208250880.

The previous prime is 22224644419. The next prime is 22224644473. The reversal of 22224644421 is 12444642222.

It is not a de Polignac number, because 22224644421 - 2¹ = 22224644419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22224644411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59781 + ... + 219141.

It is an arithmetic number, because the mean of its divisors is an integer number (1099597800).

Almost surely, 2^22224644421 is an apocalyptic number.

22224644421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22224644421 is a deficient number, since it is larger than the sum of its proper divisors (12962485179).

22224644421 is a wasteful number, since it uses less digits than its factorization.

22224644421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159629.

The product of its digits is 49152, while the sum is 33.

The spelling of 22224644421 in words is "twenty-two billion, two hundred twenty-four million, six hundred forty-four thousand, four hundred twenty-one".