11121009 has 24 divisors (see below), whose sum is σ = 16032768. Its totient is φ = 6854400.

The previous prime is 11120981. The next prime is 11121037. The reversal of 11121009 is 90012111.

11121009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (11120981) and next prime (11121037).

It is not a de Polignac number, because 11121009 - 2¹² = 11116913 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11121709) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87504 + ... + 87630.

It is an arithmetic number, because the mean of its divisors is an integer number (668032).

Almost surely, 2^11121009 is an apocalyptic number.

It is an amenable number.

11121009 is a deficient number, since it is larger than the sum of its proper divisors (4911759).

11121009 is a wasteful number, since it uses less digits than its factorization.

11121009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265 (or 248 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 15.

The square root of 11121009 is about 3334.8176861712. The cubic root of 11121009 is about 223.2105567584.

The spelling of 11121009 in words is "eleven million, one hundred twenty-one thousand, nine".