22201020022221 has 20 divisors (see below), whose sum is σ = 33165201742464. Its totient is φ = 14800360905000.

The previous prime is 22201020022201. The next prime is 22201020022249. The reversal of 22201020022221 is 12222002010222.

22201020022221 is a `hidden beast` number, since 2 + 220 + 1 + 0 + 200 + 22 + 221 = 666.

It is not a de Polignac number, because 22201020022221 - 2⁹ = 22201020021709 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22201020022194 and 22201020022203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201020022201) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 855486 + ... + 6718176.

Almost surely, 2^{22201020022221} is an apocalyptic number.

It is an amenable number.

22201020022221 is a deficient number, since it is larger than the sum of its proper divisors (10964181720243).

22201020022221 is an equidigital number, since it uses as much as digits as its factorization.

22201020022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5909454 (or 5909445 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22201020022221 its reverse (12222002010222), we get a palindrome (34423022032443).

The spelling of 22201020022221 in words is "twenty-two trillion, two hundred one billion, twenty million, twenty-two thousand, two hundred twenty-one".