20020101110221 has 4 divisors (see below), whose sum is σ = 20023043951232. Its totient is φ = 20017158269212.

The previous prime is 20020101110201. The next prime is 20020101110239. The reversal of 20020101110221 is 12201110102002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20020101110221 - 2¹¹ = 20020101108173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020101110201) 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, 1471410301 + ... + 1471423906.

It is an arithmetic number, because the mean of its divisors is an integer number (5005760987808).

Almost surely, 2^{20020101110221} is an apocalyptic number.

It is an amenable number.

20020101110221 is a deficient number, since it is larger than the sum of its proper divisors (2942841011).

20020101110221 is an equidigital number, since it uses as much as digits as its factorization.

20020101110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2942841010.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20020101110221 its reverse (12201110102002), we get a palindrome (32221211212223).

The spelling of 20020101110221 in words is "twenty trillion, twenty billion, one hundred one million, one hundred ten thousand, two hundred twenty-one".