22201224221 has 8 divisors (see below), whose sum is σ = 24233709600. Its totient is φ = 20171104240.

The previous prime is 22201224211. The next prime is 22201224223. The reversal of 22201224221 is 12242210222.

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 22201224221 - 2²² = 22197029917 is a prime.

It is a super-2 number, since 2×22201224221² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22201224193 and 22201224202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201224223) 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, 571691 + ... + 609288.

It is an arithmetic number, because the mean of its divisors is an integer number (3029213700).

Almost surely, 2^22201224221 is an apocalyptic number.

It is an amenable number.

22201224221 is a deficient number, since it is larger than the sum of its proper divisors (2032485379).

22201224221 is a wasteful number, since it uses less digits than its factorization.

22201224221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1182699.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 22201224221 its reverse (12242210222), we get a palindrome (34443434443).

The spelling of 22201224221 in words is "twenty-two billion, two hundred one million, two hundred twenty-four thousand, two hundred twenty-one".