11044555111 has 4 divisors (see below), whose sum is σ = 11128864824. Its totient is φ = 10960245400.

The previous prime is 11044555103. The next prime is 11044555147. The reversal of 11044555111 is 11155544011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11155544011 = 1063 ⋅10494397.

It is a cyclic number.

It is not a de Polignac number, because 11044555111 - 2³ = 11044555103 is a prime.

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 11044555111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11074555111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42154660 + ... + 42154921.

It is an arithmetic number, because the mean of its divisors is an integer number (2782216206).

Almost surely, 2^11044555111 is an apocalyptic number.

11044555111 is a deficient number, since it is larger than the sum of its proper divisors (84309713).

11044555111 is an equidigital number, since it uses as much as digits as its factorization.

11044555111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84309712.

The product of its (nonzero) digits is 2000, while the sum is 28.

The spelling of 11044555111 in words is "eleven billion, forty-four million, five hundred fifty-five thousand, one hundred eleven".