12421066 has 32 divisors (see below), whose sum is σ = 22302720. Its totient is φ = 5077296.

The previous prime is 12421061. The next prime is 12421099. The reversal of 12421066 is 66012421.

12421066 = 224² + 225² + ... + 364².

It is not an unprimeable number, because it can be changed into a prime (12421061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28075 + ... + 28513.

It is an arithmetic number, because the mean of its divisors is an integer number (696960).

It is a vampire number, since it can be written as 2021 ⋅ 6146 (with its own digits).

Almost surely, 2^12421066 is an apocalyptic number.

12421066 is a deficient number, since it is larger than the sum of its proper divisors (9881654).

12421066 is a wasteful number, since it uses less digits than its factorization.

12421066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 12421066 is about 3524.3532740065. The cubic root of 12421066 is about 231.5899042355.

Adding to 12421066 its reverse (66012421), we get a palindrome (78433487).

The spelling of 12421066 in words is "twelve million, four hundred twenty-one thousand, sixty-six".