12118811 has 2 divisors, whose sum is σ = 12118812. Its totient is φ = 12118810.

The previous prime is 12118801. The next prime is 12118817. The reversal of 12118811 is 11881121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12118811 - 2¹⁴ = 12102427 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (12118817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6059405 + 6059406.

It is an arithmetic number, because the mean of its divisors is an integer number (6059406).

Almost surely, 2^12118811 is an apocalyptic number.

12118811 is a deficient number, since it is larger than the sum of its proper divisors (1).

12118811 is an equidigital number, since it uses as much as digits as its factorization.

12118811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 128, while the sum is 23.

The square root of 12118811 is about 3481.2082672543. The cubic root of 12118811 is about 229.6959498426.

Adding to 12118811 its reverse (11881121), we get a palindrome (23999932).

The spelling of 12118811 in words is "twelve million, one hundred eighteen thousand, eight hundred eleven".