12113215 has 4 divisors (see below), whose sum is σ = 14535864. Its totient is φ = 9690568.

The previous prime is 12113209. The next prime is 12113221. The reversal of 12113215 is 51231121.

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

It is an interprime number because it is at equal distance from previous prime (12113209) and next prime (12113221).

It is a cyclic number.

It is not a de Polignac number, because 12113215 - 2³ = 12113207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1211317 + ... + 1211326.

It is an arithmetic number, because the mean of its divisors is an integer number (3633966).

Almost surely, 2^12113215 is an apocalyptic number.

12113215 is a deficient number, since it is larger than the sum of its proper divisors (2422649).

12113215 is an equidigital number, since it uses as much as digits as its factorization.

12113215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2422648.

The product of its digits is 60, while the sum is 16.

The square root of 12113215 is about 3480.4044305224. The cubic root of 12113215 is about 229.6605894861.

Adding to 12113215 its reverse (51231121), we get a palindrome (63344336).

The spelling of 12113215 in words is "twelve million, one hundred thirteen thousand, two hundred fifteen".