1111211100111 has 16 divisors (see below), whose sum is σ = 1695191723264. Its totient is φ = 634258646784.

The previous prime is 1111211099983. The next prime is 1111211100113. The reversal of 1111211100111 is 1110011121111.

It is not a de Polignac number, because 1111211100111 - 2⁷ = 1111211099983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111211100113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29944546 + ... + 29981631.

It is an arithmetic number, because the mean of its divisors is an integer number (105949482704).

Almost surely, 2^{1111211100111} is an apocalyptic number.

1111211100111 is a deficient number, since it is larger than the sum of its proper divisors (583980623153).

1111211100111 is an equidigital number, since it uses as much as digits as its factorization.

1111211100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59927070.

The product of its (nonzero) digits is 2, while the sum is 12.

Adding to 1111211100111 its reverse (1110011121111), we get a palindrome (2221222221222).

The spelling of 1111211100111 in words is "one trillion, one hundred eleven billion, two hundred eleven million, one hundred thousand, one hundred eleven".