12113515 has 4 divisors (see below), whose sum is σ = 14536224. Its totient is φ = 9690808.

The previous prime is 12113489. The next prime is 12113527. The reversal of 12113515 is 51531121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51531121 = 37 ⋅1392733.

It is a cyclic number.

It is not a de Polignac number, because 12113515 - 2⁵ = 12113483 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12113492 and 12113501.

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, 1211347 + ... + 1211356.

It is an arithmetic number, because the mean of its divisors is an integer number (3634056).

Almost surely, 2^12113515 is an apocalyptic number.

12113515 is a deficient number, since it is larger than the sum of its proper divisors (2422709).

12113515 is an equidigital number, since it uses as much as digits as its factorization.

12113515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2422708.

The product of its digits is 150, while the sum is 19.

The square root of 12113515 is about 3480.4475286951. The cubic root of 12113515 is about 229.6624854212.

Adding to 12113515 its reverse (51531121), we get a palindrome (63644636).

The spelling of 12113515 in words is "twelve million, one hundred thirteen thousand, five hundred fifteen".