11121611 has 2 divisors, whose sum is σ = 11121612. Its totient is φ = 11121610.

The previous prime is 11121601. The next prime is 11121613. The reversal of 11121611 is 11612111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11121611 - 2⁶ = 11121547 is a prime.

Together with 11121613, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11121613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5560805 + 5560806.

It is an arithmetic number, because the mean of its divisors is an integer number (5560806).

Almost surely, 2^11121611 is an apocalyptic number.

11121611 is a deficient number, since it is larger than the sum of its proper divisors (1).

11121611 is an equidigital number, since it uses as much as digits as its factorization.

11121611 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12, while the sum is 14.

The square root of 11121611 is about 3334.9079447565. The cubic root of 11121611 is about 223.2145842806.

Adding to 11121611 its reverse (11612111), we get a palindrome (22733722).

The spelling of 11121611 in words is "eleven million, one hundred twenty-one thousand, six hundred eleven".