22230312221 has 24 divisors (see below), whose sum is σ = 24637011840. Its totient is φ = 20044142976.

The previous prime is 22230312187. The next prime is 22230312233. The reversal of 22230312221 is 12221303222.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-22230312221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22230312193 and 22230312202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22230312241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1239500 + ... + 1257306.

It is an arithmetic number, because the mean of its divisors is an integer number (1026542160).

Almost surely, 2^22230312221 is an apocalyptic number.

It is an amenable number.

22230312221 is a deficient number, since it is larger than the sum of its proper divisors (2406699619).

22230312221 is a wasteful number, since it uses less digits than its factorization.

22230312221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18005 (or 17992 counting only the distinct ones).

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

Adding to 22230312221 its reverse (12221303222), we get a palindrome (34451615443).

The spelling of 22230312221 in words is "twenty-two billion, two hundred thirty million, three hundred twelve thousand, two hundred twenty-one".