12197515 has 8 divisors (see below), whose sum is σ = 15967728. Its totient is φ = 8870880.

The previous prime is 12197501. The next prime is 12197519. The reversal of 12197515 is 51579121.

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

It is not a de Polignac number, because 12197515 - 2²³ = 3808907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12197519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110832 + ... + 110941.

It is an arithmetic number, because the mean of its divisors is an integer number (1995966).

Almost surely, 2^12197515 is an apocalyptic number.

12197515 is a deficient number, since it is larger than the sum of its proper divisors (3770213).

12197515 is a wasteful number, since it uses less digits than its factorization.

12197515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221789.

The product of its digits is 3150, while the sum is 31.

The square root of 12197515 is about 3492.4940944832. The cubic root of 12197515 is about 230.1921205092.

The spelling of 12197515 in words is "twelve million, one hundred ninety-seven thousand, five hundred fifteen".