1211344334443 has 2 divisors, whose sum is σ = 1211344334444. Its totient is φ = 1211344334442.

The previous prime is 1211344334437. The next prime is 1211344334491. The reversal of 1211344334443 is 3444334431121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1211344334443 - 2⁹ = 1211344333931 is a prime.

It is a super-2 number, since 2×1211344334443² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1211344334243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605672167221 + 605672167222.

It is an arithmetic number, because the mean of its divisors is an integer number (605672167222).

Almost surely, 2^{1211344334443} is an apocalyptic number.

1211344334443 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211344334443 is an equidigital number, since it uses as much as digits as its factorization.

1211344334443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 37.

Adding to 1211344334443 its reverse (3444334431121), we get a palindrome (4655678765564).

The spelling of 1211344334443 in words is "one trillion, two hundred eleven billion, three hundred forty-four million, three hundred thirty-four thousand, four hundred forty-three".