12140213 has 4 divisors (see below), whose sum is σ = 12207468. Its totient is φ = 12072960.

The previous prime is 12140201. The next prime is 12140231. The reversal of 12140213 is 31204121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5207524 + 6932689 = 2282^2 + 2633^2 .

It is a cyclic number.

It is not a de Polignac number, because 12140213 - 2¹⁰ = 12139189 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12140243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33356 + ... + 33717.

It is an arithmetic number, because the mean of its divisors is an integer number (3051867).

Almost surely, 2^12140213 is an apocalyptic number.

It is an amenable number.

12140213 is a deficient number, since it is larger than the sum of its proper divisors (67255).

12140213 is an equidigital number, since it uses as much as digits as its factorization.

12140213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67254.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 12140213 is about 3484.2808440193. The cubic root of 12140213 is about 229.8310858080.

Adding to 12140213 its reverse (31204121), we get a palindrome (43344334).

The spelling of 12140213 in words is "twelve million, one hundred forty thousand, two hundred thirteen".