20441243101 has 2 divisors, whose sum is σ = 20441243102. Its totient is φ = 20441243100.

The previous prime is 20441243063. The next prime is 20441243153. The reversal of 20441243101 is 10134214402.

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., 17463358201 + 2977884900 = 132149^2 + 54570^2 .

It is a cyclic number.

It is not a de Polignac number, because 20441243101 - 2⁹ = 20441242589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20441241101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10220621550 + 10220621551.

It is an arithmetic number, because the mean of its divisors is an integer number (10220621551).

Almost surely, 2^20441243101 is an apocalyptic number.

It is an amenable number.

20441243101 is a deficient number, since it is larger than the sum of its proper divisors (1).

20441243101 is an equidigital number, since it uses as much as digits as its factorization.

20441243101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 20441243101 its reverse (10134214402), we get a palindrome (30575457503).

The spelling of 20441243101 in words is "twenty billion, four hundred forty-one million, two hundred forty-three thousand, one hundred one".