222001322221 has 24 divisors (see below), whose sum is σ = 264303673920. Its totient is φ = 185825348352.

The previous prime is 222001322209. The next prime is 222001322233. The reversal of 222001322221 is 122223100222.

It is an interprime number because it is at equal distance from previous prime (222001322209) and next prime (222001322233).

It is a de Polignac number, because none of the positive numbers 2^k-222001322221 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 (222001322251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21079485 + ... + 21090013.

It is an arithmetic number, because the mean of its divisors is an integer number (11012653080).

Almost surely, 2^222001322221 is an apocalyptic number.

It is an amenable number.

222001322221 is a deficient number, since it is larger than the sum of its proper divisors (42302351699).

222001322221 is a wasteful number, since it uses less digits than its factorization.

222001322221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20593 (or 20586 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 222001322221 its reverse (122223100222), we get a palindrome (344224422443).

The spelling of 222001322221 in words is "two hundred twenty-two billion, one million, three hundred twenty-two thousand, two hundred twenty-one".