12012897 has 16 divisors (see below), whose sum is σ = 18264960. Its totient is φ = 6957312.

The previous prime is 12012893. The next prime is 12012907. The reversal of 12012897 is 79821021.

It is not a de Polignac number, because 12012897 - 2² = 12012893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12012893) 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 15 ways as a sum of consecutive naturals, for example, 8397 + ... + 9722.

It is an arithmetic number, because the mean of its divisors is an integer number (1141560).

Almost surely, 2^12012897 is an apocalyptic number.

12012897 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12012897 is a deficient number, since it is larger than the sum of its proper divisors (6252063).

12012897 is a wasteful number, since it uses less digits than its factorization.

12012897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18152.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 12012897 is about 3465.9626368442. The cubic root of 12012897 is about 229.0248379205.

The spelling of 12012897 in words is "twelve million, twelve thousand, eight hundred ninety-seven".