11213611 has 2 divisors, whose sum is σ = 11213612. Its totient is φ = 11213610.

The previous prime is 11213597. The next prime is 11213617. The reversal of 11213611 is 11631211.

11213611 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11213611 - 2¹⁵ = 11180843 is a prime.

It is not a weakly prime, because it can be changed into another prime (11213617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5606805 + 5606806.

It is an arithmetic number, because the mean of its divisors is an integer number (5606806).

Almost surely, 2^11213611 is an apocalyptic number.

11213611 is a deficient number, since it is larger than the sum of its proper divisors (1).

11213611 is an equidigital number, since it uses as much as digits as its factorization.

11213611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36, while the sum is 16.

The square root of 11213611 is about 3348.6730207651. The cubic root of 11213611 is about 223.8283855072.

Adding to 11213611 its reverse (11631211), we get a palindrome (22844822).

The spelling of 11213611 in words is "eleven million, two hundred thirteen thousand, six hundred eleven".