1321114412243 has 4 divisors (see below), whose sum is σ = 1321118478288. Its totient is φ = 1321110346200.

The previous prime is 1321114412239. The next prime is 1321114412257. The reversal of 1321114412243 is 3422144111231.

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 1321114412243 - 2² = 1321114412239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1321114432243) 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, 1498871 + ... + 2211072.

It is an arithmetic number, because the mean of its divisors is an integer number (330279619572).

Almost surely, 2^{1321114412243} is an apocalyptic number.

1321114412243 is a deficient number, since it is larger than the sum of its proper divisors (4066045).

1321114412243 is an equidigital number, since it uses as much as digits as its factorization.

1321114412243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4066044.

The product of its digits is 4608, while the sum is 29.

Adding to 1321114412243 its reverse (3422144111231), we get a palindrome (4743258523474).

The spelling of 1321114412243 in words is "one trillion, three hundred twenty-one billion, one hundred fourteen million, four hundred twelve thousand, two hundred forty-three".