20002222102221 has 16 divisors (see below), whose sum is σ = 29649284445120. Its totient is φ = 13327451469360.

The previous prime is 20002222102157. The next prime is 20002222102249. The reversal of 20002222102221 is 12220122220002.

20002222102221 is a `hidden beast` number, since 200 + 0 + 22 + 221 + 0 + 2 + 221 = 666.

It is not a de Polignac number, because 20002222102221 - 2⁶ = 20002222102157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20002222102194 and 20002222102203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002222152221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 204485350 + ... + 204583143.

It is an arithmetic number, because the mean of its divisors is an integer number (1853080277820).

Almost surely, 2^{20002222102221} is an apocalyptic number.

It is an amenable number.

20002222102221 is a deficient number, since it is larger than the sum of its proper divisors (9647062342899).

20002222102221 is a wasteful number, since it uses less digits than its factorization.

20002222102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409070313 (or 409070307 counting only the distinct ones).

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

Adding to 20002222102221 its reverse (12220122220002), we get a palindrome (32222344322223).

The spelling of 20002222102221 in words is "twenty trillion, two billion, two hundred twenty-two million, one hundred two thousand, two hundred twenty-one".