20441121541 has 2 divisors, whose sum is σ = 20441121542. Its totient is φ = 20441121540.

The previous prime is 20441121473. The next prime is 20441121577. The reversal of 20441121541 is 14512114402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11554100100 + 8887021441 = 107490^2 + 94271^2 .

It is a cyclic number.

It is not a de Polignac number, because 20441121541 - 2¹⁹ = 20440597253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20441121241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10220560770 + 10220560771.

It is an arithmetic number, because the mean of its divisors is an integer number (10220560771).

Almost surely, 2^20441121541 is an apocalyptic number.

It is an amenable number.

20441121541 is a deficient number, since it is larger than the sum of its proper divisors (1).

20441121541 is an equidigital number, since it uses as much as digits as its factorization.

20441121541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1280, while the sum is 25.

Adding to 20441121541 its reverse (14512114402), we get a palindrome (34953235943).

The spelling of 20441121541 in words is "twenty billion, four hundred forty-one million, one hundred twenty-one thousand, five hundred forty-one".