12113211 has 16 divisors (see below), whose sum is σ = 17677440. Its totient is φ = 7317120.

The previous prime is 12113209. The next prime is 12113221. The reversal of 12113211 is 11231121.

It is not a de Polignac number, because 12113211 - 2¹ = 12113209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12113201) 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, 19260 + ... + 19878.

It is an arithmetic number, because the mean of its divisors is an integer number (1104840).

Almost surely, 2^12113211 is an apocalyptic number.

12113211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12113211 is a deficient number, since it is larger than the sum of its proper divisors (5564229).

12113211 is a wasteful number, since it uses less digits than its factorization.

12113211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226.

The product of its digits is 12, while the sum is 12.

The square root of 12113211 is about 3480.4038558765. The cubic root of 12113211 is about 229.6605642068.

Adding to 12113211 its reverse (11231121), we get a palindrome (23344332).

The spelling of 12113211 in words is "twelve million, one hundred thirteen thousand, two hundred eleven".