22223221232221 has 8 divisors (see below), whose sum is σ = 22228392936960. Its totient is φ = 22218049853328.

The previous prime is 22223221232207. The next prime is 22223221232281. The reversal of 22223221232221 is 12223212232222.

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 22223221232221 - 2²³ = 22223212843613 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 22223221232221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22223221232281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182038320 + ... + 182160358.

It is an arithmetic number, because the mean of its divisors is an integer number (2778549117120).

Almost surely, 2^{22223221232221} is an apocalyptic number.

It is an amenable number.

22223221232221 is a deficient number, since it is larger than the sum of its proper divisors (5171704739).

22223221232221 is a wasteful number, since it uses less digits than its factorization.

22223221232221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162923.

The product of its digits is 9216, while the sum is 28.

Adding to 22223221232221 its reverse (12223212232222), we get a palindrome (34446433464443).

It can be divided in two parts, 2222322 and 1232221, that added together give a palindrome (3454543).

The spelling of 22223221232221 in words is "twenty-two trillion, two hundred twenty-three billion, two hundred twenty-one million, two hundred thirty-two thousand, two hundred twenty-one".