12216115 has 8 divisors (see below), whose sum is σ = 15521760. Its totient is φ = 9197952.

The previous prime is 12216103. The next prime is 12216119. The reversal of 12216115 is 51161221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12216115 - 2¹¹ = 12214067 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12216092 and 12216101.

It is not an unprimeable number, because it can be changed into a prime (12216119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71775 + ... + 71944.

It is an arithmetic number, because the mean of its divisors is an integer number (1940220).

Almost surely, 2^12216115 is an apocalyptic number.

12216115 is a deficient number, since it is larger than the sum of its proper divisors (3305645).

12216115 is a wasteful number, since it uses less digits than its factorization.

12216115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143741.

The product of its digits is 120, while the sum is 19.

The square root of 12216115 is about 3495.1559335744. The cubic root of 12216115 is about 230.3090677988.

Adding to 12216115 its reverse (51161221), we get a palindrome (63377336).

The spelling of 12216115 in words is "twelve million, two hundred sixteen thousand, one hundred fifteen".