220521341 has 8 divisors (see below), whose sum is σ = 222377400. Its totient is φ = 218670592.

The previous prime is 220521317. The next prime is 220521359. The reversal of 220521341 is 143125022.

It can be written as a sum of positive squares in 4 ways, for example, as 2102500 + 218418841 = 1450^2 + 14779^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 220521341 - 2¹⁴ = 220504957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220521361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141221 + ... + 142773.

It is an arithmetic number, because the mean of its divisors is an integer number (27797175).

Almost surely, 2^220521341 is an apocalyptic number.

It is an amenable number.

220521341 is a deficient number, since it is larger than the sum of its proper divisors (1856059).

220521341 is a wasteful number, since it uses less digits than its factorization.

220521341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2655.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 220521341 is about 14849.9609763797. The cubic root of 220521341 is about 604.1575515856.

Adding to 220521341 its reverse (143125022), we get a palindrome (363646363).

The spelling of 220521341 in words is "two hundred twenty million, five hundred twenty-one thousand, three hundred forty-one".