1211344334243 has 2 divisors, whose sum is σ = 1211344334244. Its totient is φ = 1211344334242.

The previous prime is 1211344334237. The next prime is 1211344334363. The reversal of 1211344334243 is 3424334431121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1211344334243 - 2⁴ = 1211344334227 is a prime.

It is a super-2 number, since 2×1211344334243² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (1211344334443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605672167121 + 605672167122.

It is an arithmetic number, because the mean of its divisors is an integer number (605672167122).

Almost surely, 2^{1211344334243} is an apocalyptic number.

1211344334243 is a deficient number, since it is larger than the sum of its proper divisors (1).

1211344334243 is an equidigital number, since it uses as much as digits as its factorization.

1211344334243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 35.

Adding to 1211344334243 its reverse (3424334431121), we get a palindrome (4635678765364).

The spelling of 1211344334243 in words is "one trillion, two hundred eleven billion, three hundred forty-four million, three hundred thirty-four thousand, two hundred forty-three".