200012201210221 has 4 divisors (see below), whose sum is σ = 204890547581244. Its totient is φ = 195133854839200.

The previous prime is 200012201210197. The next prime is 200012201210233. The reversal of 200012201210221 is 122012102210002.

It is a happy number.

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 66046276056996 + 133965925153225 = 8126886^2 + 11574365^2 .

It is a cyclic number.

It is not a de Polignac number, because 200012201210221 - 2¹¹ = 200012201208173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200012201210195 and 200012201210204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200012201213221) 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, 2439173185450 + ... + 2439173185531.

It is an arithmetic number, because the mean of its divisors is an integer number (51222636895311).

Almost surely, 2^{200012201210221} is an apocalyptic number.

It is an amenable number.

200012201210221 is a deficient number, since it is larger than the sum of its proper divisors (4878346371023).

200012201210221 is an equidigital number, since it uses as much as digits as its factorization.

200012201210221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4878346371022.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 200012201210221 its reverse (122012102210002), we get a palindrome (322024303420223).

The spelling of 200012201210221 in words is "two hundred trillion, twelve billion, two hundred one million, two hundred ten thousand, two hundred twenty-one".