20002000110221 has 4 divisors (see below), whose sum is σ = 20002111765500. Its totient is φ = 20001888454944.

The previous prime is 20002000110193. The next prime is 20002000110263. The reversal of 20002000110221 is 12201100020002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17459745252196 + 2542254858025 = 4178486^2 + 1594445^2 .

It is a cyclic number.

It is not a de Polignac number, because 20002000110221 - 2¹⁰ = 20002000109197 is a prime.

It is a super-2 number, since 2×20002000110221² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002000116221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55558496 + ... + 55917353.

It is an arithmetic number, because the mean of its divisors is an integer number (5000527941375).

Almost surely, 2^{20002000110221} is an apocalyptic number.

It is an amenable number.

20002000110221 is a deficient number, since it is larger than the sum of its proper divisors (111655279).

20002000110221 is a wasteful number, since it uses less digits than its factorization.

20002000110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111655278.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20002000110221 its reverse (12201100020002), we get a palindrome (32203100130223).

The spelling of 20002000110221 in words is "twenty trillion, two billion, one hundred ten thousand, two hundred twenty-one".