12399211 has 16 divisors (see below), whose sum is σ = 14307840. Its totient is φ = 10638880.

The previous prime is 12399199. The next prime is 12399251. The reversal of 12399211 is 11299321.

It is a cyclic number.

It is not a de Polignac number, because 12399211 - 2¹¹ = 12397163 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12399211.

It is not an unprimeable number, because it can be changed into a prime (12399251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14580 + ... + 15406.

It is an arithmetic number, because the mean of its divisors is an integer number (894240).

Almost surely, 2^12399211 is an apocalyptic number.

12399211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12399211 is a deficient number, since it is larger than the sum of its proper divisors (1908629).

12399211 is a wasteful number, since it uses less digits than its factorization.

12399211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914.

The product of its digits is 972, while the sum is 28.

The square root of 12399211 is about 3521.2513400778. The cubic root of 12399211 is about 231.4539961797.

The spelling of 12399211 in words is "twelve million, three hundred ninety-nine thousand, two hundred eleven".