12002201 has 4 divisors (see below), whose sum is σ = 12416100. Its totient is φ = 11588304.

The previous prime is 12002189. The next prime is 12002209. The reversal of 12002201 is 10220021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10220021 = 7 ⋅1460003.

It can be written as a sum of positive squares in 2 ways, for example, as 9030025 + 2972176 = 3005^2 + 1724^2 .

It is a cyclic number.

It is not a de Polignac number, because 12002201 - 2¹⁰ = 12001177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12002209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206906 + ... + 206963.

It is an arithmetic number, because the mean of its divisors is an integer number (3104025).

Almost surely, 2^12002201 is an apocalyptic number.

It is an amenable number.

12002201 is a deficient number, since it is larger than the sum of its proper divisors (413899).

12002201 is an equidigital number, since it uses as much as digits as its factorization.

12002201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 413898.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 12002201 is about 3464.4192875574. The cubic root of 12002201 is about 228.9568449664.

Adding to 12002201 its reverse (10220021), we get a palindrome (22222222).

The spelling of 12002201 in words is "twelve million, two thousand, two hundred one".