1111211105 has 16 divisors (see below), whose sum is σ = 1404937920. Its totient is φ = 841399488.

The previous prime is 1111211063. The next prime is 1111211111. The reversal of 1111211105 is 5011121111.

It is a cyclic number.

It is not a de Polignac number, because 1111211105 - 2¹⁶ = 1111145569 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1111211105.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110414 + ... + 120056.

It is an arithmetic number, because the mean of its divisors is an integer number (87808620).

Almost surely, 2^1111211105 is an apocalyptic number.

It is an amenable number.

1111211105 is a deficient number, since it is larger than the sum of its proper divisors (293726815).

1111211105 is a wasteful number, since it uses less digits than its factorization.

1111211105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10880.

The product of its (nonzero) digits is 10, while the sum is 14.

The square root of 1111211105 is about 33334.8332079223. The cubic root of 1111211105 is about 1035.7752381455.

Adding to 1111211105 its reverse (5011121111), we get a palindrome (6122332216).

The spelling of 1111211105 in words is "one billion, one hundred eleven million, two hundred eleven thousand, one hundred five".