22201031221 has 32 divisors (see below), whose sum is σ = 24882577920. Its totient is φ = 19699992576.

The previous prime is 22201031219. The next prime is 22201031231. The reversal of 22201031221 is 12213010222.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22201031221 - 2¹ = 22201031219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22201031195 and 22201031204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201031201) 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 31 ways as a sum of consecutive naturals, for example, 13814400 + ... + 13816006.

It is an arithmetic number, because the mean of its divisors is an integer number (777580560).

Almost surely, 2^22201031221 is an apocalyptic number.

It is an amenable number.

22201031221 is a deficient number, since it is larger than the sum of its proper divisors (2681546699).

22201031221 is a wasteful number, since it uses less digits than its factorization.

22201031221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2133.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 22201031221 its reverse (12213010222), we get a palindrome (34414041443).

The spelling of 22201031221 in words is "twenty-two billion, two hundred one million, thirty-one thousand, two hundred twenty-one".