1120121 has 2 divisors, whose sum is σ = 1120122.
Its totient is φ = 1120120.
The previous prime is 1120109. The next prime is 1120153. The reversal of 1120121 is 1210211.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 657721 + 462400 = 811^2 + 680^2
It is an emirp because it is prime and its reverse (1210211) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 1120121 - 214 = 1103737 is a prime.
It is a plaindrome in base 16.
It is a junction number, because it is equal to n+sod(n) for n = 1120099 and 1120108.
It is not a weakly prime, because it can be changed into another prime (1120321) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560060 + 560061.
It is an arithmetic number, because the mean of its divisors is an integer number (560061).
21120121 is an apocalyptic number.
It is an amenable number.
1120121 is a deficient number, since it is larger than the sum of its proper divisors (1).
1120121 is an equidigital number, since it uses as much as digits as its factorization.
1120121 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 4, while the sum is 8.
The square root of 1120121 is about 1058.3576900084.
The cubic root of 1120121 is about 103.8536217344.
Adding to 1120121 its reverse (1210211), we get a palindrome (2330332).
The spelling of 1120121 in words is "one million, one hundred twenty thousand, one hundred twenty-one".