201010020221 has 2 divisors, whose sum is σ = 201010020222. Its totient is φ = 201010020220.

The previous prime is 201010020209. The next prime is 201010020247. The reversal of 201010020221 is 122020010102.

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., 140614500196 + 60395520025 = 374986^2 + 245755^2 .

It is a cyclic number.

It is not a de Polignac number, because 201010020221 - 2³⁰ = 199936278397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201010022221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100505010110 + 100505010111.

It is an arithmetic number, because the mean of its divisors is an integer number (100505010111).

Almost surely, 2^201010020221 is an apocalyptic number.

It is an amenable number.

201010020221 is a deficient number, since it is larger than the sum of its proper divisors (1).

201010020221 is an equidigital number, since it uses as much as digits as its factorization.

201010020221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 201010020221 its reverse (122020010102), we get a palindrome (323030030323).

The spelling of 201010020221 in words is "two hundred one billion, ten million, twenty thousand, two hundred twenty-one".