20444241121 has 2 divisors, whose sum is σ = 20444241122. Its totient is φ = 20444241120.

The previous prime is 20444241101. The next prime is 20444241133. The reversal of 20444241121 is 12114244402.

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., 18073038096 + 2371203025 = 134436^2 + 48695^2 .

It is a cyclic number.

It is not a de Polignac number, because 20444241121 - 2¹⁵ = 20444208353 is a prime.

It is not a weakly prime, because it can be changed into another prime (20444241101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10222120560 + 10222120561.

It is an arithmetic number, because the mean of its divisors is an integer number (10222120561).

Almost surely, 2^20444241121 is an apocalyptic number.

It is an amenable number.

20444241121 is a deficient number, since it is larger than the sum of its proper divisors (1).

20444241121 is an equidigital number, since it uses as much as digits as its factorization.

20444241121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 20444241121 its reverse (12114244402), we get a palindrome (32558485523).

The spelling of 20444241121 in words is "twenty billion, four hundred forty-four million, two hundred forty-one thousand, one hundred twenty-one".