110121121111 has 4 divisors (see below), whose sum is σ = 110122782472. Its totient is φ = 110119459752.

The previous prime is 110121121109. The next prime is 110121121147. The reversal of 110121121111 is 111121121011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111121121011 = 673 ⋅165113107.

It is a cyclic number.

It is not a de Polignac number, because 110121121111 - 2¹ = 110121121109 is a prime.

It is a super-2 number, since 2×110121121111² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 110121121091 and 110121121100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110121121181) 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 3 ways as a sum of consecutive naturals, for example, 726936 + ... + 865261.

It is an arithmetic number, because the mean of its divisors is an integer number (27530695618).

Almost surely, 2^110121121111 is an apocalyptic number.

110121121111 is a deficient number, since it is larger than the sum of its proper divisors (1661361).

110121121111 is an equidigital number, since it uses as much as digits as its factorization.

110121121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1661360.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 110121121111 its reverse (111121121011), we get a palindrome (221242242122).

The spelling of 110121121111 in words is "one hundred ten billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred eleven".