22201021120221 has 24 divisors (see below), whose sum is σ = 32321393455104. Its totient is φ = 14683800670560.

The previous prime is 22201021120147. The next prime is 22201021120253. The reversal of 22201021120221 is 12202112010222.

It is a happy number.

22201021120221 is a `hidden beast` number, since 2 + 220 + 10 + 211 + 2 + 0 + 221 = 666.

It is not a de Polignac number, because 22201021120221 - 2¹⁸ = 22201020858077 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22201021120194 and 22201021120203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201021120321) 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, 55266231 + ... + 55666491.

It is an arithmetic number, because the mean of its divisors is an integer number (1346724727296).

Almost surely, 2^{22201021120221} is an apocalyptic number.

It is an amenable number.

22201021120221 is a deficient number, since it is larger than the sum of its proper divisors (10120372334883).

22201021120221 is a wasteful number, since it uses less digits than its factorization.

22201021120221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448921 (or 448918 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22201021120221 its reverse (12202112010222), we get a palindrome (34403133130443).

The spelling of 22201021120221 in words is "twenty-two trillion, two hundred one billion, twenty-one million, one hundred twenty thousand, two hundred twenty-one".