200100010221 has 24 divisors (see below), whose sum is σ = 290171714040. Its totient is φ = 132874828800.

The previous prime is 200100010219. The next prime is 200100010267. The reversal of 200100010221 is 122010001002.

It can be written as a sum of positive squares in 4 ways, for example, as 14898887721 + 185201122500 = 122061^2 + 430350^2 .

It is not a de Polignac number, because 200100010221 - 2¹ = 200100010219 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 (200100010021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21011941 + ... + 21021461.

It is an arithmetic number, because the mean of its divisors is an integer number (12090488085).

Almost surely, 2^200100010221 is an apocalyptic number.

It is an amenable number.

200100010221 is a deficient number, since it is larger than the sum of its proper divisors (90071703819).

200100010221 is a wasteful number, since it uses less digits than its factorization.

200100010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18477 (or 18474 counting only the distinct ones).

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

Adding to 200100010221 its reverse (122010001002), we get a palindrome (322110011223).

The spelling of 200100010221 in words is "two hundred billion, one hundred million, ten thousand, two hundred twenty-one".