12997215 has 96 divisors (see below), whose sum is σ = 29233152. Its totient is φ = 5227200.

The previous prime is 12997213. The next prime is 12997217. The reversal of 12997215 is 51279921.

12997215 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12997213) and next prime (12997217).

It is not a de Polignac number, because 12997215 - 2¹ = 12997213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12997215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12997213) 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 95 ways as a sum of consecutive naturals, for example, 419250 + ... + 419280.

It is an arithmetic number, because the mean of its divisors is an integer number (304512).

Almost surely, 2^12997215 is an apocalyptic number.

12997215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12997215 is an abundant number, since it is smaller than the sum of its proper divisors (16235937).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12997215 is a wasteful number, since it uses less digits than its factorization.

12997215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82 (or 57 counting only the distinct ones).

The product of its digits is 11340, while the sum is 36.

The square root of 12997215 is about 3605.1650447656. The cubic root of 12997215 is about 235.1166766316.

It can be divided in two parts, 1299 and 7215, that multiplied together give a triangular number (9372285 = T₄₃₂₉).

The spelling of 12997215 in words is "twelve million, nine hundred ninety-seven thousand, two hundred fifteen".