12021475 has 12 divisors (see below), whose sum is σ = 15131224. Its totient is φ = 9472320.

The previous prime is 12021473. The next prime is 12021491. The reversal of 12021475 is 57412021.

It is a happy number.

It is not a de Polignac number, because 12021475 - 2¹ = 12021473 is a prime.

It is a super-2 number, since 2×12021475² = 289031722351250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12021473) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1914 + ... + 5263.

Almost surely, 2^12021475 is an apocalyptic number.

12021475 is a deficient number, since it is larger than the sum of its proper divisors (3109749).

12021475 is an equidigital number, since it uses as much as digits as its factorization.

12021475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7254 (or 7249 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 12021475 is about 3467.1998788648. The cubic root of 12021475 is about 229.0793378920.

Adding to 12021475 its reverse (57412021), we get a palindrome (69433496).

The spelling of 12021475 in words is "twelve million, twenty-one thousand, four hundred seventy-five".