22533544221 has 8 divisors (see below), whose sum is σ = 30048718080. Its totient is φ = 15020366592.

The previous prime is 22533544211. The next prime is 22533544237. The reversal of 22533544221 is 12244533522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22533544221 - 2¹¹ = 22533542173 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22533544211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 472516 + ... + 518013.

It is an arithmetic number, because the mean of its divisors is an integer number (3756089760).

Almost surely, 2^22533544221 is an apocalyptic number.

It is an amenable number.

22533544221 is a deficient number, since it is larger than the sum of its proper divisors (7515173859).

22533544221 is an equidigital number, since it uses as much as digits as its factorization.

22533544221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998115.

The product of its digits is 57600, while the sum is 33.

The spelling of 22533544221 in words is "twenty-two billion, five hundred thirty-three million, five hundred forty-four thousand, two hundred twenty-one".