2121242041 has 2 divisors, whose sum is σ = 2121242042. Its totient is φ = 2121242040.

The previous prime is 2121242029. The next prime is 2121242059. The reversal of 2121242041 is 1402421212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1082146816 + 1039095225 = 32896^2 + 32235^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121242041 - 2¹¹ = 2121239993 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121242741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060621020 + 1060621021.

It is an arithmetic number, because the mean of its divisors is an integer number (1060621021).

Almost surely, 2^2121242041 is an apocalyptic number.

It is an amenable number.

2121242041 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121242041 is an equidigital number, since it uses as much as digits as its factorization.

2121242041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 2121242041 is about 46056.9434613284. The cubic root of 2121242041 is about 1284.8824837648.

Adding to 2121242041 its reverse (1402421212), we get a palindrome (3523663253).

The spelling of 2121242041 in words is "two billion, one hundred twenty-one million, two hundred forty-two thousand, forty-one".