2123121241 has 2 divisors, whose sum is σ = 2123121242. Its totient is φ = 2123121240.

The previous prime is 2123121197. The next prime is 2123121263. The reversal of 2123121241 is 1421213212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2030403600 + 92717641 = 45060^2 + 9629^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123121241 - 2¹⁹ = 2122596953 is a prime.

It is not a weakly prime, because it can be changed into another prime (2123121281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1061560620 + 1061560621.

It is an arithmetic number, because the mean of its divisors is an integer number (1061560621).

Almost surely, 2^2123121241 is an apocalyptic number.

It is an amenable number.

2123121241 is a deficient number, since it is larger than the sum of its proper divisors (1).

2123121241 is an equidigital number, since it uses as much as digits as its factorization.

2123121241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 192, while the sum is 19.

The square root of 2123121241 is about 46077.3397778127. The cubic root of 2123121241 is about 1285.2617958933.

Adding to 2123121241 its reverse (1421213212), we get a palindrome (3544334453).

The spelling of 2123121241 in words is "two billion, one hundred twenty-three million, one hundred twenty-one thousand, two hundred forty-one".