1100011211111 has 4 divisors (see below), whose sum is σ = 1106369657592. Its totient is φ = 1093652764632.

The previous prime is 1100011211107. The next prime is 1100011211147. The reversal of 1100011211111 is 1111121100011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1100011211111 - 2² = 1100011211107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1100011211092 and 1100011211101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1100011711111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3179222981 + ... + 3179223326.

It is an arithmetic number, because the mean of its divisors is an integer number (276592414398).

Almost surely, 2^{1100011211111} is an apocalyptic number.

1100011211111 is a deficient number, since it is larger than the sum of its proper divisors (6358446481).

1100011211111 is an equidigital number, since it uses as much as digits as its factorization.

1100011211111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6358446480.

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 1100011211111 its reverse (1111121100011), we get a palindrome (2211132311122).

The spelling of 1100011211111 in words is "one trillion, one hundred billion, eleven million, two hundred eleven thousand, one hundred eleven".