200000201021221 has 2 divisors, whose sum is σ = 200000201021222. Its totient is φ = 200000201021220.

The previous prime is 200000201021183. The next prime is 200000201021263. The reversal of 200000201021221 is 122120102000002.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146238472268100 + 53761728753121 = 12092910^2 + 7332239^2 .

It is a cyclic number.

It is not a de Polignac number, because 200000201021221 - 2¹¹ = 200000201019173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200000201021921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100000100510610 + 100000100510611.

It is an arithmetic number, because the mean of its divisors is an integer number (100000100510611).

Almost surely, 2^{200000201021221} is an apocalyptic number.

It is an amenable number.

200000201021221 is a deficient number, since it is larger than the sum of its proper divisors (1).

200000201021221 is an equidigital number, since it uses as much as digits as its factorization.

200000201021221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 200000201021221 its reverse (122120102000002), we get a palindrome (322120303021223).

The spelling of 200000201021221 in words is "two hundred trillion, two hundred one million, twenty-one thousand, two hundred twenty-one".