12013211 has 16 divisors (see below), whose sum is σ = 14217984. Its totient is φ = 9936864.

The previous prime is 12013207. The next prime is 12013219. The reversal of 12013211 is 11231021.

It is not a de Polignac number, because 12013211 - 2² = 12013207 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12013192 and 12013201.

It is not an unprimeable number, because it can be changed into a prime (12013219) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32021 + ... + 32393.

It is an arithmetic number, because the mean of its divisors is an integer number (888624).

Almost surely, 2^12013211 is an apocalyptic number.

12013211 is a deficient number, since it is larger than the sum of its proper divisors (2204773).

12013211 is a wasteful number, since it uses less digits than its factorization.

12013211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 12013211 is about 3466.0079342090. The cubic root of 12013211 is about 229.0268333640.

Adding to 12013211 its reverse (11231021), we get a palindrome (23244232).

It can be divided in two parts, 120 and 13211, that added together give a palindrome (13331).

The spelling of 12013211 in words is "twelve million, thirteen thousand, two hundred eleven".