2167121 has 8 divisors (see below), whose sum is σ = 2488800. Its totient is φ = 1866240.

The previous prime is 2167111. The next prime is 2167163. The reversal of 2167121 is 1217612.

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

It is a cyclic number.

It is not a de Polignac number, because 2167121 - 2¹⁸ = 1904977 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2167093 and 2167102.

It is not an unprimeable number, because it can be changed into a prime (2167111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4976 + ... + 5393.

It is an arithmetic number, because the mean of its divisors is an integer number (311100).

2^2167121 is an apocalyptic number.

It is an amenable number.

2167121 is a deficient number, since it is larger than the sum of its proper divisors (321679).

2167121 is a wasteful number, since it uses less digits than its factorization.

2167121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10399.

The product of its digits is 168, while the sum is 20.

The square root of 2167121 is about 1472.1144656582. The cubic root of 2167121 is about 129.4079786326.

It can be divided in two parts, 216 and 7121, that added together give a palindrome (7337).

The spelling of 2167121 in words is "two million, one hundred sixty-seven thousand, one hundred twenty-one".