11981105 has 8 divisors (see below), whose sum is σ = 14481600. Its totient is φ = 9515376.

The previous prime is 11981087. The next prime is 11981113. The reversal of 11981105 is 50118911.

11981105 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 11981105 - 2⁶ = 11981041 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7925 + ... + 9314.

It is an arithmetic number, because the mean of its divisors is an integer number (1810200).

Almost surely, 2^11981105 is an apocalyptic number.

It is an amenable number.

11981105 is a deficient number, since it is larger than the sum of its proper divisors (2500495).

11981105 is a wasteful number, since it uses less digits than its factorization.

11981105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17383.

The product of its (nonzero) digits is 360, while the sum is 26.

The square root of 11981105 is about 3461.3732823837. The cubic root of 11981105 is about 228.8226221886.

The spelling of 11981105 in words is "eleven million, nine hundred eighty-one thousand, one hundred five".