2124444121 has 2 divisors, whose sum is σ = 2124444122. Its totient is φ = 2124444120.

The previous prime is 2124444109. The next prime is 2124444149. The reversal of 2124444121 is 1214444212.

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., 1216265625 + 908178496 = 34875^2 + 30136^2 .

It is a cyclic number.

It is not a de Polignac number, because 2124444121 - 2¹⁷ = 2124313049 is a prime.

It is not a weakly prime, because it can be changed into another prime (2124424121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1062222060 + 1062222061.

It is an arithmetic number, because the mean of its divisors is an integer number (1062222061).

Almost surely, 2^2124444121 is an apocalyptic number.

It is an amenable number.

2124444121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2124444121 is an equidigital number, since it uses as much as digits as its factorization.

2124444121 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2124444121 is about 46091.6925378099. The cubic root of 2124444121 is about 1285.5286819103.

Adding to 2124444121 its reverse (1214444212), we get a palindrome (3338888333).

Subtracting from 2124444121 its reverse (1214444212), we obtain a palindrome (909999909).

The spelling of 2124444121 in words is "two billion, one hundred twenty-four million, four hundred forty-four thousand, one hundred twenty-one".