12434611044221 has 4 divisors (see below), whose sum is σ = 12434619044700. Its totient is φ = 12434603043744.

The previous prime is 12434611044217. The next prime is 12434611044253. The reversal of 12434611044221 is 12244011643421.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2693258443225 + 9741352600996 = 1641115^2 + 3121114^2 .

It is a cyclic number.

It is not a de Polignac number, because 12434611044221 - 2² = 12434611044217 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12434611044521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 832976 + ... + 5055993.

It is an arithmetic number, because the mean of its divisors is an integer number (3108654761175).

Almost surely, 2^{12434611044221} is an apocalyptic number.

It is an amenable number.

12434611044221 is a deficient number, since it is larger than the sum of its proper divisors (8000479).

12434611044221 is an equidigital number, since it uses as much as digits as its factorization.

12434611044221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8000478.

The product of its (nonzero) digits is 36864, while the sum is 35.

Adding to 12434611044221 its reverse (12244011643421), we get a palindrome (24678622687642).

The spelling of 12434611044221 in words is "twelve trillion, four hundred thirty-four billion, six hundred eleven million, forty-four thousand, two hundred twenty-one".