22223123333221 has 4 divisors (see below), whose sum is σ = 23530365882252. Its totient is φ = 20915880784192.

The previous prime is 22223123333207. The next prime is 22223123333239. The reversal of 22223123333221 is 12233332132222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8654693236996 + 13568430096225 = 2941886^2 + 3683535^2 .

It is a cyclic number.

It is not a de Polignac number, because 22223123333221 - 2¹⁹ = 22223122808933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22223123333821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 653621274490 + ... + 653621274523.

It is an arithmetic number, because the mean of its divisors is an integer number (5882591470563).

Almost surely, 2^{22223123333221} is an apocalyptic number.

It is an amenable number.

22223123333221 is a deficient number, since it is larger than the sum of its proper divisors (1307242549031).

22223123333221 is a wasteful number, since it uses less digits than its factorization.

22223123333221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307242549030.

The product of its digits is 31104, while the sum is 31.

Adding to 22223123333221 its reverse (12233332132222), we get a palindrome (34456455465443).

The spelling of 22223123333221 in words is "twenty-two trillion, two hundred twenty-three billion, one hundred twenty-three million, three hundred thirty-three thousand, two hundred twenty-one".