2121421113023 has 2 divisors, whose sum is σ = 2121421113024. Its totient is φ = 2121421113022.

The previous prime is 2121421113013. The next prime is 2121421113043. The reversal of 2121421113023 is 3203111241212.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121421113023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2121421113023.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121421113013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060710556511 + 1060710556512.

It is an arithmetic number, because the mean of its divisors is an integer number (1060710556512).

Almost surely, 2^{2121421113023} is an apocalyptic number.

2121421113023 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121421113023 is an equidigital number, since it uses as much as digits as its factorization.

2121421113023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 2121421113023 its reverse (3203111241212), we get a palindrome (5324532354235).

The spelling of 2121421113023 in words is "two trillion, one hundred twenty-one billion, four hundred twenty-one million, one hundred thirteen thousand, twenty-three".