22122330221 has 8 divisors (see below), whose sum is σ = 22546289304. Its totient is φ = 21698614080.

The previous prime is 22122330151. The next prime is 22122330233. The reversal of 22122330221 is 12203322122.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 321807721 + 21800522500 = 17939^2 + 147650^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 22122330221 - 2¹⁰ = 22122329197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22122330193 and 22122330202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122330121) 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, 128735 + ... + 246611.

It is an arithmetic number, because the mean of its divisors is an integer number (2818286163).

Almost surely, 2^22122330221 is an apocalyptic number.

It is an amenable number.

22122330221 is a deficient number, since it is larger than the sum of its proper divisors (423959083).

22122330221 is a wasteful number, since it uses less digits than its factorization.

22122330221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121471.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 22122330221 its reverse (12203322122), we get a palindrome (34325652343).

The spelling of 22122330221 in words is "twenty-two billion, one hundred twenty-two million, three hundred thirty thousand, two hundred twenty-one".