22081221227 has 8 divisors (see below), whose sum is σ = 23787324960. Its totient is φ = 20376195840.

The previous prime is 22081221193. The next prime is 22081221251. The reversal of 22081221227 is 72212218022.

It is a happy number.

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

It is not a de Polignac number, because 22081221227 - 2¹⁸ = 22080959083 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22081221227.

It is not an unprimeable number, because it can be changed into a prime (22081227227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226799 + ... + 309192.

It is an arithmetic number, because the mean of its divisors is an integer number (2973415620).

Almost surely, 2^22081221227 is an apocalyptic number.

22081221227 is a deficient number, since it is larger than the sum of its proper divisors (1706103733).

22081221227 is a wasteful number, since it uses less digits than its factorization.

22081221227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539173.

The product of its (nonzero) digits is 3584, while the sum is 29.

Adding to 22081221227 its reverse (72212218022), we get a palindrome (94293439249).

The spelling of 22081221227 in words is "twenty-two billion, eighty-one million, two hundred twenty-one thousand, two hundred twenty-seven".