20020222210221 has 24 divisors (see below), whose sum is σ = 30779473181184. Its totient is φ = 12495939930240.

The previous prime is 20020222210189. The next prime is 20020222210267. The reversal of 20020222210221 is 12201222202002.

20020222210221 is a `hidden beast` number, since 20 + 0 + 202 + 2 + 221 + 0 + 221 = 666.

It is not a de Polignac number, because 20020222210221 - 2⁵ = 20020222210189 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20020222210194 and 20020222210203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020222210271) 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, 342512991 + ... + 342571436.

It is an arithmetic number, because the mean of its divisors is an integer number (1282478049216).

Almost surely, 2^{20020222210221} is an apocalyptic number.

It is an amenable number.

20020222210221 is a deficient number, since it is larger than the sum of its proper divisors (10759250970963).

20020222210221 is a wasteful number, since it uses less digits than its factorization.

20020222210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685084641 (or 685084638 counting only the distinct ones).

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

Adding to 20020222210221 its reverse (12201222202002), we get a palindrome (32221444412223).

The spelling of 20020222210221 in words is "twenty trillion, twenty billion, two hundred twenty-two million, two hundred ten thousand, two hundred twenty-one".