110111211121011 has 4 divisors (see below), whose sum is σ = 146814948161352. Its totient is φ = 73407474080672.

The previous prime is 110111211120991. The next prime is 110111211121019. The reversal of 110111211121011 is 110121112111011.

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 110111211121011 - 2¹⁸ = 110111210858867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (110111211121019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18351868520166 + ... + 18351868520171.

It is an arithmetic number, because the mean of its divisors is an integer number (36703737040338).

Almost surely, 2^{110111211121011} is an apocalyptic number.

110111211121011 is a deficient number, since it is larger than the sum of its proper divisors (36703737040341).

110111211121011 is an equidigital number, since it uses as much as digits as its factorization.

110111211121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36703737040340.

The product of its (nonzero) digits is 4, while the sum is 15.

Adding to 110111211121011 its reverse (110121112111011), we get a palindrome (220232323232022).

The spelling of 110111211121011 in words is "one hundred ten trillion, one hundred eleven billion, two hundred eleven million, one hundred twenty-one thousand, eleven".