1243222220443 has 8 divisors (see below), whose sum is σ = 1442031744512. Its totient is φ = 1049714283816.

The previous prime is 1243222220441. The next prime is 1243222220453. The reversal of 1243222220443 is 3440222223421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1243222220443 - 2¹ = 1243222220441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1243222220441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1325396355 + ... + 1325397292.

It is an arithmetic number, because the mean of its divisors is an integer number (180253968064).

Almost surely, 2^{1243222220443} is an apocalyptic number.

1243222220443 is a deficient number, since it is larger than the sum of its proper divisors (198809524069).

1243222220443 is an equidigital number, since it uses as much as digits as its factorization.

1243222220443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2650793721.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 1243222220443 its reverse (3440222223421), we get a palindrome (4683444443864).

The spelling of 1243222220443 in words is "one trillion, two hundred forty-three billion, two hundred twenty-two million, two hundred twenty thousand, four hundred forty-three".