11013121109 has 8 divisors (see below), whose sum is σ = 11195330328. Its totient is φ = 10830965760.

The previous prime is 11013121087. The next prime is 11013121153. The reversal of 11013121109 is 90112131011.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 914881009 + 10098240100 = 30247^2 + 100490^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11013121109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11013121159) 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, 806789 + ... + 820325.

It is an arithmetic number, because the mean of its divisors is an integer number (1399416291).

Almost surely, 2^11013121109 is an apocalyptic number.

It is an amenable number.

11013121109 is a deficient number, since it is larger than the sum of its proper divisors (182209219).

11013121109 is a wasteful number, since it uses less digits than its factorization.

11013121109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26935.

The product of its (nonzero) digits is 54, while the sum is 20.

The spelling of 11013121109 in words is "eleven billion, thirteen million, one hundred twenty-one thousand, one hundred nine".