1211240342241 has 24 divisors (see below), whose sum is σ = 1752132695040. Its totient is φ = 806311316736.

The previous prime is 1211240342177. The next prime is 1211240342251. The reversal of 1211240342241 is 1422430421121.

1211240342241 is a `hidden beast` number, since 1 + 2 + 1 + 12 + 403 + 4 + 2 + 241 = 666.

It is not a de Polignac number, because 1211240342241 - 2⁶ = 1211240342177 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1211240342251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18447316 + ... + 18512858.

It is an arithmetic number, because the mean of its divisors is an integer number (73005528960).

Almost surely, 2^{1211240342241} is an apocalyptic number.

It is an amenable number.

1211240342241 is a deficient number, since it is larger than the sum of its proper divisors (540892352799).

1211240342241 is a wasteful number, since it uses less digits than its factorization.

1211240342241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68525 (or 68522 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 1211240342241 its reverse (1422430421121), we get a palindrome (2633670763362).

The spelling of 1211240342241 in words is "one trillion, two hundred eleven billion, two hundred forty million, three hundred forty-two thousand, two hundred forty-one".