41205530221 has 2 divisors, whose sum is σ = 41205530222. Its totient is φ = 41205530220.

The previous prime is 41205530161. The next prime is 41205530231. The reversal of 41205530221 is 12203550214.

41205530221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35338736196 + 5866794025 = 187986^2 + 76595^2 .

It is a cyclic number.

It is not a de Polignac number, because 41205530221 - 2¹¹ = 41205528173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41205530231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20602765110 + 20602765111.

It is an arithmetic number, because the mean of its divisors is an integer number (20602765111).

Almost surely, 2^41205530221 is an apocalyptic number.

It is an amenable number.

41205530221 is a deficient number, since it is larger than the sum of its proper divisors (1).

41205530221 is an equidigital number, since it uses as much as digits as its factorization.

41205530221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2400, while the sum is 25.

The spelling of 41205530221 in words is "forty-one billion, two hundred five million, five hundred thirty thousand, two hundred twenty-one".