12115005 has 48 divisors (see below), whose sum is σ = 23048064. Its totient is φ = 5416320.

The previous prime is 12115003. The next prime is 12115013. The reversal of 12115005 is 50051121.

It is not a de Polignac number, because 12115005 - 2¹ = 12115003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12115003) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 38800 + ... + 39110.

It is an arithmetic number, because the mean of its divisors is an integer number (480168).

Almost surely, 2^12115005 is an apocalyptic number.

12115005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12115005 is a deficient number, since it is larger than the sum of its proper divisors (10933059).

12115005 is a wasteful number, since it uses less digits than its factorization.

12115005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386 (or 379 counting only the distinct ones).

The product of its (nonzero) digits is 50, while the sum is 15.

The square root of 12115005 is about 3480.6615750458. The cubic root of 12115005 is about 229.6719014350.

Adding to 12115005 its reverse (50051121), we get a palindrome (62166126).

It can be divided in two parts, 1211 and 5005, that added together give a triangular number (6216 = T₁₁₁).

The spelling of 12115005 in words is "twelve million, one hundred fifteen thousand, five".