20000202010221 has 4 divisors (see below), whose sum is σ = 26666936013632. Its totient is φ = 13333468006812.

The previous prime is 20000202010199. The next prime is 20000202010223. The reversal of 20000202010221 is 12201020200002.

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 not a de Polignac number, because 20000202010221 - 2¹⁵ = 20000201977453 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20000202010197 and 20000202010206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000202010223) 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, 3333367001701 + ... + 3333367001706.

It is an arithmetic number, because the mean of its divisors is an integer number (6666734003408).

Almost surely, 2^{20000202010221} is an apocalyptic number.

It is an amenable number.

20000202010221 is a deficient number, since it is larger than the sum of its proper divisors (6666734003411).

20000202010221 is an equidigital number, since it uses as much as digits as its factorization.

20000202010221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6666734003410.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20000202010221 its reverse (12201020200002), we get a palindrome (32201222210223).

The spelling of 20000202010221 in words is "twenty trillion, two hundred two million, ten thousand, two hundred twenty-one".