1000200100221 has 48 divisors (see below), whose sum is σ = 1788905948544. Its totient is φ = 525412887552.

The previous prime is 1000200100201. The next prime is 1000200100223. The reversal of 1000200100221 is 1220010020001.

1000200100221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1000200100221 - 2¹¹ = 1000200098173 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000200100223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10813176 + ... + 10905281.

It is an arithmetic number, because the mean of its divisors is an integer number (37268873928).

Almost surely, 2^{1000200100221} is an apocalyptic number.

It is an amenable number.

1000200100221 is a deficient number, since it is larger than the sum of its proper divisors (788705848323).

1000200100221 is a wasteful number, since it uses less digits than its factorization.

1000200100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21718530 (or 21718527 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1000200100221 its reverse (1220010020001), we get a palindrome (2220210120222).

The spelling of 1000200100221 in words is "one trillion, two hundred million, one hundred thousand, two hundred twenty-one".