1100111212105 has 32 divisors (see below), whose sum is σ = 1369326551040. Its totient is φ = 847571739840.

The previous prime is 1100111212087. The next prime is 1100111212121. The reversal of 1100111212105 is 5012121110011.

It is not a de Polignac number, because 1100111212105 - 2²⁵ = 1100077657673 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 156195714 + ... + 156202756.

It is an arithmetic number, because the mean of its divisors is an integer number (42791454720).

Almost surely, 2^{1100111212105} is an apocalyptic number.

It is an amenable number.

1100111212105 is a deficient number, since it is larger than the sum of its proper divisors (269215338935).

1100111212105 is a wasteful number, since it uses less digits than its factorization.

1100111212105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11821.

The product of its (nonzero) digits is 20, while the sum is 16.

Adding to 1100111212105 its reverse (5012121110011), we get a palindrome (6112232322116).

The spelling of 1100111212105 in words is "one trillion, one hundred billion, one hundred eleven million, two hundred twelve thousand, one hundred five".