200021002101221 has 16 divisors (see below), whose sum is σ = 232033832050176. Its totient is φ = 168868357620336.

The previous prime is 200021002101187. The next prime is 200021002101257. The reversal of 200021002101221 is 122101200120002.

200021002101221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200021002101221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200021002101196 and 200021002101205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200021002101281) 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, 20276531 + ... + 28481216.

It is an arithmetic number, because the mean of its divisors is an integer number (14502114503136).

Almost surely, 2^{200021002101221} is an apocalyptic number.

It is an amenable number.

200021002101221 is a deficient number, since it is larger than the sum of its proper divisors (32012829948955).

200021002101221 is an equidigital number, since it uses as much as digits as its factorization.

200021002101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48766568.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 200021002101221 its reverse (122101200120002), we get a palindrome (322122202221223).

The spelling of 200021002101221 in words is "two hundred trillion, twenty-one billion, two million, one hundred one thousand, two hundred twenty-one".