20211241 has 2 divisors, whose sum is σ = 20211242. Its totient is φ = 20211240.

The previous prime is 20211221. The next prime is 20211253. The reversal of 20211241 is 14211202.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18455616 + 1755625 = 4296^2 + 1325^2 .

It is a cyclic number.

It is not a de Polignac number, because 20211241 - 2⁵ = 20211209 is a prime.

It is not a weakly prime, because it can be changed into another prime (20211221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10105620 + 10105621.

It is an arithmetic number, because the mean of its divisors is an integer number (10105621).

Almost surely, 2^20211241 is an apocalyptic number.

It is an amenable number.

20211241 is a deficient number, since it is larger than the sum of its proper divisors (1).

20211241 is an equidigital number, since it uses as much as digits as its factorization.

20211241 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.

The square root of 20211241 is about 4495.6913817565. The cubic root of 20211241 is about 272.3940771725.

Adding to 20211241 its reverse (14211202), we get a palindrome (34422443).

The spelling of 20211241 in words is "twenty million, two hundred eleven thousand, two hundred forty-one".