12111315 has 16 divisors (see below), whose sum is σ = 19421856. Its totient is φ = 6444800.

The previous prime is 12111313. The next prime is 12111331. The reversal of 12111315 is 51311121.

It is not a de Polignac number, because 12111315 - 2¹ = 12111313 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 12111294 and 12111303.

It is not an unprimeable number, because it can be changed into a prime (12111311) 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, 10885 + ... + 11945.

It is an arithmetic number, because the mean of its divisors is an integer number (1213866).

Almost surely, 2^12111315 is an apocalyptic number.

12111315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12111315 is a deficient number, since it is larger than the sum of its proper divisors (7310541).

12111315 is a wasteful number, since it uses less digits than its factorization.

12111315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1830.

The product of its digits is 30, while the sum is 15.

The square root of 12111315 is about 3480.1314630341. The cubic root of 12111315 is about 229.6485811702.

Adding to 12111315 its reverse (51311121), we get a palindrome (63422436).

The spelling of 12111315 in words is "twelve million, one hundred eleven thousand, three hundred fifteen".