1211424043441 has 4 divisors (see below), whose sum is σ = 1228486353984. Its totient is φ = 1194361732900.

The previous prime is 1211424043429. The next prime is 1211424043451. The reversal of 1211424043441 is 1443404241121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1211424043441 - 2²⁵ = 1211390489009 is a prime.

It is a super-3 number, since 3×1211424043441³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1211424043451) 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 in 3 ways as a sum of consecutive naturals, for example, 8531155165 + ... + 8531155306.

It is an arithmetic number, because the mean of its divisors is an integer number (307121588496).

Almost surely, 2^{1211424043441} is an apocalyptic number.

It is an amenable number.

1211424043441 is a deficient number, since it is larger than the sum of its proper divisors (17062310543).

1211424043441 is an equidigital number, since it uses as much as digits as its factorization.

1211424043441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17062310542.

The product of its (nonzero) digits is 12288, while the sum is 31.

Adding to 1211424043441 its reverse (1443404241121), we get a palindrome (2654828284562).

The spelling of 1211424043441 in words is "one trillion, two hundred eleven billion, four hundred twenty-four million, forty-three thousand, four hundred forty-one".