2021314231243 has 2 divisors, whose sum is σ = 2021314231244. Its totient is φ = 2021314231242.

The previous prime is 2021314231169. The next prime is 2021314231259. The reversal of 2021314231243 is 3421324131202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021314231243 is a prime.

It is a super-2 number, since 2×2021314231243² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2021314831243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010657115621 + 1010657115622.

It is an arithmetic number, because the mean of its divisors is an integer number (1010657115622).

Almost surely, 2^{2021314231243} is an apocalyptic number.

2021314231243 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021314231243 is an equidigital number, since it uses as much as digits as its factorization.

2021314231243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 2021314231243 its reverse (3421324131202), we get a palindrome (5442638362445).

The spelling of 2021314231243 in words is "two trillion, twenty-one billion, three hundred fourteen million, two hundred thirty-one thousand, two hundred forty-three".