12210201 has 6 divisors (see below), whose sum is σ = 17636970. Its totient is φ = 8140128.

The previous prime is 12210197. The next prime is 12210203. The reversal of 12210201 is 10201221.

It can be written as a sum of positive squares in only one way, i.e., 10890000 + 1320201 = 3300^2 + 1149^2 .

It is not a de Polignac number, because 12210201 - 2² = 12210197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 1356689 = 12210201 / (1 + 2 + 2 + 1 + 0 + 2 + 0 + 1).

It is not an unprimeable number, because it can be changed into a prime (12210203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 678336 + ... + 678353.

It is an arithmetic number, because the mean of its divisors is an integer number (2939495).

Almost surely, 2^12210201 is an apocalyptic number.

It is an amenable number.

12210201 is a deficient number, since it is larger than the sum of its proper divisors (5426769).

12210201 is a wasteful number, since it uses less digits than its factorization.

12210201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356695 (or 1356692 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 12210201 is about 3494.3098030942. The cubic root of 12210201 is about 230.2718964700.

Adding to 12210201 its reverse (10201221), we get a palindrome (22411422).

The spelling of 12210201 in words is "twelve million, two hundred ten thousand, two hundred one".