1102121 has 4 divisors (see below), whose sum is σ = 1129044.
Its totient is φ = 1075200.
The previous prime is 1102117. The next prime is 1102147. The reversal of 1102121 is 1212011.
Adding to 1102121 its reverse (1212011), we get a palindrome (2314132).
It is a semiprime because it is the product of two primes.
It can be written as a sum of positive squares in 2 ways, for example, as 403225 + 698896 = 635^2 + 836^2
It is a cyclic number.
It is not a de Polignac number, because 1102121 - 22 = 1102117 is a prime.
It is a Duffinian number.
It is a Curzon number.
It is a junction number, because it is equal to n+sod(n) for n = 1102099 and 1102108.
It is not an unprimeable number, because it can be changed into a prime (1102111) 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, 13400 + ... + 13481.
It is an arithmetic number, because the mean of its divisors is an integer number (282261).
21102121 is an apocalyptic number.
It is an amenable number.
1102121 is a deficient number, since it is larger than the sum of its proper divisors (26923).
1102121 is an equidigital number, since it uses as much as digits as its factorization.
1102121 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 26922.
The product of its (nonzero) digits is 4, while the sum is 8.
The square root of 1102121 is about 1049.8195082965.
The cubic root of 1102121 is about 103.2943164063.
The spelling of 1102121 in words is "one million, one hundred two thousand, one hundred twenty-one".