12099911 has 2 divisors, whose sum is σ = 12099912. Its totient is φ = 12099910.

The previous prime is 12099907. The next prime is 12099917. The reversal of 12099911 is 11999021.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12099911 - 2² = 12099907 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12099917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6049955 + 6049956.

It is an arithmetic number, because the mean of its divisors is an integer number (6049956).

Almost surely, 2^12099911 is an apocalyptic number.

12099911 is a deficient number, since it is larger than the sum of its proper divisors (1).

12099911 is an equidigital number, since it uses as much as digits as its factorization.

12099911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1458, while the sum is 32.

The square root of 12099911 is about 3478.4926333112. The cubic root of 12099911 is about 229.5764795903.

The spelling of 12099911 in words is "twelve million, ninety-nine thousand, nine hundred eleven".