200000020221 has 6 divisors (see below), whose sum is σ = 288888918110. Its totient is φ = 133333346808.

The previous prime is 200000020217. The next prime is 200000020229. The reversal of 200000020221 is 122020000002.

It can be written as a sum of positive squares in only one way, i.e., 199707096996 + 292923225 = 446886^2 + 17115^2 .

It is not a de Polignac number, because 200000020221 - 2² = 200000020217 is a prime.

It is a super-5 number, since 5×200000020221⁵ (a number of 58 digits) contains 55555 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 22222224469 = 200000020221 / (2 + 0 + 0 + 0 + 0 + 0 + 0 + 2 + 0 + 2 + 2 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200000020229) 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 5 ways as a sum of consecutive naturals, for example, 11111112226 + ... + 11111112243.

Almost surely, 2^200000020221 is an apocalyptic number.

It is an amenable number.

200000020221 is a deficient number, since it is larger than the sum of its proper divisors (88888897889).

200000020221 is a wasteful number, since it uses less digits than its factorization.

200000020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22222224475 (or 22222224472 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 200000020221 its reverse (122020000002), we get a palindrome (322020020223).

The spelling of 200000020221 in words is "two hundred billion, twenty thousand, two hundred twenty-one".