200221002221 has 4 divisors (see below), whose sum is σ = 211998708252. Its totient is φ = 188443296192.

The previous prime is 200221002209. The next prime is 200221002229. The reversal of 200221002221 is 122200122002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 109131122500 + 91089879721 = 330350^2 + 301811^2 .

It is a de Polignac number, because none of the positive numbers 2^k-200221002221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200221002196 and 200221002205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200221002229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5888852990 + ... + 5888853023.

It is an arithmetic number, because the mean of its divisors is an integer number (52999677063).

Almost surely, 2^200221002221 is an apocalyptic number.

It is an amenable number.

200221002221 is a deficient number, since it is larger than the sum of its proper divisors (11777706031).

200221002221 is a wasteful number, since it uses less digits than its factorization.

200221002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11777706030.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 200221002221 its reverse (122200122002), we get a palindrome (322421124223).

The spelling of 200221002221 in words is "two hundred billion, two hundred twenty-one million, two thousand, two hundred twenty-one".