12215995 has 8 divisors (see below), whose sum is σ = 15991920. Its totient is φ = 8884320.

The previous prime is 12215971. The next prime is 12216037. The reversal of 12215995 is 59951221.

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

It is not a de Polignac number, because 12215995 - 2¹¹ = 12213947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12215995.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111000 + ... + 111109.

It is an arithmetic number, because the mean of its divisors is an integer number (1998990).

Almost surely, 2^12215995 is an apocalyptic number.

12215995 is a deficient number, since it is larger than the sum of its proper divisors (3775925).

12215995 is a wasteful number, since it uses less digits than its factorization.

12215995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222125.

The product of its digits is 8100, while the sum is 34.

The square root of 12215995 is about 3495.1387669161. The cubic root of 12215995 is about 230.3083136808.

The spelling of 12215995 in words is "twelve million, two hundred fifteen thousand, nine hundred ninety-five".