200021344221 has 16 divisors (see below), whose sum is σ = 268854768000. Its totient is φ = 132270207168.

The previous prime is 200021344219. The next prime is 200021344223. The reversal of 200021344221 is 122443120002.

It is an interprime number because it is at equal distance from previous prime (200021344219) and next prime (200021344223).

It is not a de Polignac number, because 200021344221 - 2¹ = 200021344219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200021344223) 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, 17215 + ... + 632723.

It is an arithmetic number, because the mean of its divisors is an integer number (16803423000).

Almost surely, 2^200021344221 is an apocalyptic number.

It is an amenable number.

200021344221 is a deficient number, since it is larger than the sum of its proper divisors (68833423779).

200021344221 is a wasteful number, since it uses less digits than its factorization.

200021344221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616388.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 200021344221 its reverse (122443120002), we get a palindrome (322464464223).

The spelling of 200021344221 in words is "two hundred billion, twenty-one million, three hundred forty-four thousand, two hundred twenty-one".