8522121 has 16 divisors (see below), whose sum is σ = 11972736. Its totient is φ = 5381376.

The previous prime is 8522119. The next prime is 8522141. The reversal of 8522121 is 1212258.

It is a happy number.

It is not a de Polignac number, because 8522121 - 2¹ = 8522119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8522141) 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 15 ways as a sum of consecutive naturals, for example, 7251 + ... + 8343.

It is an arithmetic number, because the mean of its divisors is an integer number (748296).

Almost surely, 2^8522121 is an apocalyptic number.

It is an amenable number.

8522121 is a deficient number, since it is larger than the sum of its proper divisors (3450615).

8522121 is a wasteful number, since it uses less digits than its factorization.

8522121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1232.

The product of its digits is 320, while the sum is 21.

The square root of 8522121 is about 2919.2672025699. The cubic root of 8522121 is about 204.2596415265.

Adding to 8522121 its reverse (1212258), we get a palindrome (9734379).

The spelling of 8522121 in words is "eight million, five hundred twenty-two thousand, one hundred twenty-one".