11121000009 has 16 divisors (see below), whose sum is σ = 17039917440. Its totient is φ = 6319745280.

The previous prime is 11120999999. The next prime is 11121000049. The reversal of 11121000009 is 90000012111.

It is not a de Polignac number, because 11121000009 - 2⁴ = 11120999993 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11121000049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1459104 + ... + 1466705.

It is an arithmetic number, because the mean of its divisors is an integer number (1064994840).

Almost surely, 2^11121000009 is an apocalyptic number.

It is an amenable number.

11121000009 is a deficient number, since it is larger than the sum of its proper divisors (5918917431).

11121000009 is a wasteful number, since it uses less digits than its factorization.

11121000009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2926000.

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

The spelling of 11121000009 in words is "eleven billion, one hundred twenty-one million, nine", and thus it is an aban number.