11009191012 has 24 divisors (see below), whose sum is σ = 19404415800. Its totient is φ = 5465107200.

The previous prime is 11009191003. The next prime is 11009191019. The reversal of 11009191012 is 21019190011.

It can be written as a sum of positive squares in 4 ways, for example, as 127780416 + 10881410596 = 11304^2 + 104314^2 .

It is not an unprimeable number, because it can be changed into a prime (11009191019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2501598 + ... + 2505994.

It is an arithmetic number, because the mean of its divisors is an integer number (808517325).

Almost surely, 2^11009191012 is an apocalyptic number.

It is an amenable number.

11009191012 is a deficient number, since it is larger than the sum of its proper divisors (8395224788).

11009191012 is a wasteful number, since it uses less digits than its factorization.

11009191012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8751 (or 8749 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 25.

The spelling of 11009191012 in words is "eleven billion, nine million, one hundred ninety-one thousand, twelve".