1021343242243 has 4 divisors (see below), whose sum is σ = 1021354436160. Its totient is φ = 1021332048328.

The previous prime is 1021343242217. The next prime is 1021343242261. The reversal of 1021343242243 is 3422423431201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1021343242243 - 2³³ = 1012753307651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021343242343) 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 in 3 ways as a sum of consecutive naturals, for example, 5458963 + ... + 5642956.

It is an arithmetic number, because the mean of its divisors is an integer number (255338609040).

Almost surely, 2^{1021343242243} is an apocalyptic number.

1021343242243 is a deficient number, since it is larger than the sum of its proper divisors (11193917).

1021343242243 is an equidigital number, since it uses as much as digits as its factorization.

1021343242243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11193916.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 1021343242243 its reverse (3422423431201), we get a palindrome (4443766673444).

The spelling of 1021343242243 in words is "one trillion, twenty-one billion, three hundred forty-three million, two hundred forty-two thousand, two hundred forty-three".