22241401221 has 8 divisors (see below), whose sum is σ = 31936371040. Its totient is φ = 13687016112.

The previous prime is 22241401177. The next prime is 22241401229. The reversal of 22241401221 is 12210414222.

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

It is not a de Polignac number, because 22241401221 - 2⁷ = 22241401093 is a prime.

It is a super-4 number, since 4×22241401221⁴ (a number of 42 digits) contains 4444 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22241401229) 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 7 ways as a sum of consecutive naturals, for example, 285146131 + ... + 285146208.

It is an arithmetic number, because the mean of its divisors is an integer number (3992046380).

Almost surely, 2^22241401221 is an apocalyptic number.

It is an amenable number.

22241401221 is a deficient number, since it is larger than the sum of its proper divisors (9694969819).

22241401221 is a wasteful number, since it uses less digits than its factorization.

22241401221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570292355.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 22241401221 its reverse (12210414222), we get a palindrome (34451815443).

The spelling of 22241401221 in words is "twenty-two billion, two hundred forty-one million, four hundred one thousand, two hundred twenty-one".