12915211 has 4 divisors (see below), whose sum is σ = 12952152. Its totient is φ = 12878272.

The previous prime is 12915209. The next prime is 12915239. The reversal of 12915211 is 11251921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12915211 - 2¹ = 12915209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12915241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17941 + ... + 18646.

It is an arithmetic number, because the mean of its divisors is an integer number (3238038).

Almost surely, 2^12915211 is an apocalyptic number.

12915211 is a deficient number, since it is larger than the sum of its proper divisors (36941).

12915211 is an equidigital number, since it uses as much as digits as its factorization.

12915211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36940.

The product of its digits is 180, while the sum is 22.

The square root of 12915211 is about 3593.7739216595. The cubic root of 12915211 is about 234.6211550948.

The spelling of 12915211 in words is "twelve million, nine hundred fifteen thousand, two hundred eleven".