2121324371 has 2 divisors, whose sum is σ = 2121324372. Its totient is φ = 2121324370.

The previous prime is 2121324341. The next prime is 2121324377. The reversal of 2121324371 is 1734231212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121324371 - 2¹⁸ = 2121062227 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2121324371.

It is not a weakly prime, because it can be changed into another prime (2121324377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060662185 + 1060662186.

It is an arithmetic number, because the mean of its divisors is an integer number (1060662186).

Almost surely, 2^2121324371 is an apocalyptic number.

2121324371 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121324371 is an equidigital number, since it uses as much as digits as its factorization.

2121324371 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2016, while the sum is 26.

The square root of 2121324371 is about 46057.8372375430. The cubic root of 2121324371 is about 1284.8991065742.

Adding to 2121324371 its reverse (1734231212), we get a palindrome (3855555583).

The spelling of 2121324371 in words is "two billion, one hundred twenty-one million, three hundred twenty-four thousand, three hundred seventy-one".