20104441121 has 2 divisors, whose sum is σ = 20104441122. Its totient is φ = 20104441120.

The previous prime is 20104441117. The next prime is 20104441127. The reversal of 20104441121 is 12114440102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19993960000 + 110481121 = 141400^2 + 10511^2 .

It is a cyclic number.

It is not a de Polignac number, because 20104441121 - 2² = 20104441117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20104441093 and 20104441102.

It is not a weakly prime, because it can be changed into another prime (20104441127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10052220560 + 10052220561.

It is an arithmetic number, because the mean of its divisors is an integer number (10052220561).

Almost surely, 2^20104441121 is an apocalyptic number.

It is an amenable number.

20104441121 is a deficient number, since it is larger than the sum of its proper divisors (1).

20104441121 is an equidigital number, since it uses as much as digits as its factorization.

20104441121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 20104441121 its reverse (12114440102), we get a palindrome (32218881223).

The spelling of 20104441121 in words is "twenty billion, one hundred four million, four hundred forty-one thousand, one hundred twenty-one".