11011212111109 has 16 divisors (see below), whose sum is σ = 13607991802368. Its totient is φ = 8693994753792.

The previous prime is 11011212111077. The next prime is 11011212111113. The reversal of 11011212111109 is 90111121211011.

11011212111109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11011212111109 - 2⁵ = 11011212111077 is a prime.

It is a super-2 number, since 2×11011212111109² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11011212111109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011212151109) 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, 984368814 + ... + 984379999.

It is an arithmetic number, because the mean of its divisors is an integer number (850499487648).

Almost surely, 2^{11011212111109} is an apocalyptic number.

It is an amenable number.

11011212111109 is a deficient number, since it is larger than the sum of its proper divisors (2596779691259).

11011212111109 is a wasteful number, since it uses less digits than its factorization.

11011212111109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1968748884.

The product of its (nonzero) digits is 36, while the sum is 22.

The spelling of 11011212111109 in words is "eleven trillion, eleven billion, two hundred twelve million, one hundred eleven thousand, one hundred nine".