12720211 has 8 divisors (see below), whose sum is σ = 14586624. Its totient is φ = 10866120.

The previous prime is 12720187. The next prime is 12720229. The reversal of 12720211 is 11202721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12720211 - 2⁵ = 12720179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12720271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 745 + ... + 5098.

It is an arithmetic number, because the mean of its divisors is an integer number (1823328).

Almost surely, 2^12720211 is an apocalyptic number.

12720211 is a deficient number, since it is larger than the sum of its proper divisors (1866413).

12720211 is an equidigital number, since it uses as much as digits as its factorization.

12720211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6161.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 12720211 is about 3566.5404806339. The cubic root of 12720211 is about 233.4343546693.

Adding to 12720211 its reverse (11202721), we get a palindrome (23922932).

The spelling of 12720211 in words is "twelve million, seven hundred twenty thousand, two hundred eleven".