11099921 has 12 divisors (see below), whose sum is σ = 12968640. Its totient is φ = 9472680.

The previous prime is 11099917. The next prime is 11099923. The reversal of 11099921 is 12999011.

11099921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11099921 - 2² = 11099917 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11099923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17276 + ... + 17906.

It is an arithmetic number, because the mean of its divisors is an integer number (1080720).

Almost surely, 2^11099921 is an apocalyptic number.

It is an amenable number.

11099921 is a deficient number, since it is larger than the sum of its proper divisors (1868719).

11099921 is an equidigital number, since it uses as much as digits as its factorization.

11099921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004 (or 997 counting only the distinct ones).

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

The square root of 11099921 is about 3331.6543938410. The cubic root of 11099921 is about 223.0693812414.

The spelling of 11099921 in words is "eleven million, ninety-nine thousand, nine hundred twenty-one".