20020101010221 has 16 divisors (see below), whose sum is σ = 28763791607936. Its totient is φ = 12312785059776.

The previous prime is 20020101010187. The next prime is 20020101010243. The reversal of 20020101010221 is 12201010102002.

It is not a de Polignac number, because 20020101010221 - 2³⁰ = 20019027268397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20020101010197 and 20020101010206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020101020221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151539385 + ... + 151671438.

It is an arithmetic number, because the mean of its divisors is an integer number (1797736975496).

Almost surely, 2^{20020101010221} is an apocalyptic number.

It is an amenable number.

20020101010221 is a deficient number, since it is larger than the sum of its proper divisors (8743690597715).

20020101010221 is a wasteful number, since it uses less digits than its factorization.

20020101010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303212532.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20020101010221 its reverse (12201010102002), we get a palindrome (32221111112223).

The spelling of 20020101010221 in words is "twenty trillion, twenty billion, one hundred one million, ten thousand, two hundred twenty-one".