22320123221 has 8 divisors (see below), whose sum is σ = 24351017088. Its totient is φ = 20289528000.

The previous prime is 22320123193. The next prime is 22320123227. The reversal of 22320123221 is 12232102322.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22320123221 is a prime.

It is a super-3 number, since 3×22320123221³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22320123193 and 22320123202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22320123227) 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, 99236 + ... + 233426.

It is an arithmetic number, because the mean of its divisors is an integer number (3043877136).

Almost surely, 2^22320123221 is an apocalyptic number.

It is an amenable number.

22320123221 is a deficient number, since it is larger than the sum of its proper divisors (2030893867).

22320123221 is a wasteful number, since it uses less digits than its factorization.

22320123221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149323.

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

Adding to 22320123221 its reverse (12232102322), we get a palindrome (34552225543).

It can be divided in two parts, 22320 and 123221, that added together give a palindrome (145541).

The spelling of 22320123221 in words is "twenty-two billion, three hundred twenty million, one hundred twenty-three thousand, two hundred twenty-one".