11110043207621 has 2 divisors, whose sum is σ = 11110043207622. Its totient is φ = 11110043207620.

The previous prime is 11110043207563. The next prime is 11110043207651. The reversal of 11110043207621 is 12670234001111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9806824612225 + 1303218595396 = 3131585^2 + 1141586^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11110043207621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11110043207651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5555021603810 + 5555021603811.

It is an arithmetic number, because the mean of its divisors is an integer number (5555021603811).

Almost surely, 2^{11110043207621} is an apocalyptic number.

It is an amenable number.

11110043207621 is a deficient number, since it is larger than the sum of its proper divisors (1).

11110043207621 is an equidigital number, since it uses as much as digits as its factorization.

11110043207621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

Adding to 11110043207621 its reverse (12670234001111), we get a palindrome (23780277208732).

The spelling of 11110043207621 in words is "eleven trillion, one hundred ten billion, forty-three million, two hundred seven thousand, six hundred twenty-one".