12267999 has 24 divisors (see below), whose sum is σ = 18909072. Its totient is φ = 7637760.

The previous prime is 12267973. The next prime is 12268013. The reversal of 12267999 is 99976221.

12267999 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12267999 - 2⁵ = 12267967 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12265999) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27472 + ... + 27914.

It is an arithmetic number, because the mean of its divisors is an integer number (787878).

Almost surely, 2^12267999 is an apocalyptic number.

12267999 is a deficient number, since it is larger than the sum of its proper divisors (6641073).

12267999 is a wasteful number, since it uses less digits than its factorization.

12267999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647 (or 644 counting only the distinct ones).

The product of its digits is 122472, while the sum is 45.

The square root of 12267999 is about 3502.5703419061. The cubic root of 12267999 is about 230.6346617232.

It can be divided in two parts, 122 and 67999, that added together give a square (68121 = 261²).

The spelling of 12267999 in words is "twelve million, two hundred sixty-seven thousand, nine hundred ninety-nine".