11110121 has 12 divisors (see below), whose sum is σ = 12535632.
Its totient is φ = 9765000.
The previous prime is 11110111. The next prime is 11110123. The reversal of 11110121 is 12101111.
It is a happy number.
11110121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is not a de Polignac number, because 11110121 - 210 = 11109097 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 11110099 and 11110108.
It is not an unprimeable number, because it can be changed into a prime (11110123) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10046 + ... + 11096.
It is an arithmetic number, because the mean of its divisors is an integer number (1044636).
Almost surely, 211110121 is an apocalyptic number.
11110121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.
It is an amenable number.
11110121 is a deficient number, since it is larger than the sum of its proper divisors (1425511).
11110121 is a wasteful number, since it uses less digits than its factorization.
11110121 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1124 (or 1093 counting only the distinct ones).
The product of its (nonzero) digits is 2, while the sum is 8.
The square root of 11110121 is about 3333.1848133579.
The cubic root of 11110121 is about 223.1376883671.
Adding to 11110121 its reverse (12101111), we get a palindrome (23211232).
The spelling of 11110121 in words is "eleven million, one hundred ten thousand, one hundred twenty-one".