2121117 has 8 divisors (see below), whose sum is σ = 2839680. Its totient is φ = 1408320.

The previous prime is 2121043. The next prime is 2121121. The reversal of 2121117 is 7111212.

2121117 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2121117 - 2¹⁰ = 2120093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121096 and 2121105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2121127) 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 in 7 ways as a sum of consecutive naturals, for example, 492 + ... + 2117.

It is an arithmetic number, because the mean of its divisors is an integer number (354960).

2^2121117 is an apocalyptic number.

It is an amenable number.

2121117 is a deficient number, since it is larger than the sum of its proper divisors (718563).

2121117 is a wasteful number, since it uses less digits than its factorization.

2121117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2883.

The product of its digits is 28, while the sum is 15.

The square root of 2121117 is about 1456.4055067185. The cubic root of 2121117 is about 128.4857236583.

Adding to 2121117 its reverse (7111212), we get a palindrome (9232329).

The spelling of 2121117 in words is "two million, one hundred twenty-one thousand, one hundred seventeen".