200012212022221 has 4 divisors (see below), whose sum is σ = 200225672228092. Its totient is φ = 199798751816352.

The previous prime is 200012212022209. The next prime is 200012212022323. The reversal of 200012212022221 is 122220212210002.

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 109004332584196 + 91007879438025 = 10440514^2 + 9539805^2 .

It is a cyclic number.

It is not a de Polignac number, because 200012212022221 - 2¹³ = 200012212014029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200012212722221) 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, 106730101530 + ... + 106730103403.

It is an arithmetic number, because the mean of its divisors is an integer number (50056418057023).

Almost surely, 2^{200012212022221} is an apocalyptic number.

It is an amenable number.

200012212022221 is a deficient number, since it is larger than the sum of its proper divisors (213460205871).

200012212022221 is an equidigital number, since it uses as much as digits as its factorization.

200012212022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213460205870.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 200012212022221 its reverse (122220212210002), we get a palindrome (322232424232223).

The spelling of 200012212022221 in words is "two hundred trillion, twelve billion, two hundred twelve million, twenty-two thousand, two hundred twenty-one".