12099199 has 4 divisors (see below), whose sum is σ = 13827664. Its totient is φ = 10370736.

The previous prime is 12099161. The next prime is 12099209. The reversal of 12099199 is 99199021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99199021 = 9811 ⋅10111.

It is a cyclic number.

It is not a de Polignac number, because 12099199 - 2¹³ = 12091007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12099299) 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, 864222 + ... + 864235.

It is an arithmetic number, because the mean of its divisors is an integer number (3456916).

Almost surely, 2^12099199 is an apocalyptic number.

12099199 is a deficient number, since it is larger than the sum of its proper divisors (1728465).

12099199 is an equidigital number, since it uses as much as digits as its factorization.

12099199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728464.

The product of its (nonzero) digits is 13122, while the sum is 40.

The square root of 12099199 is about 3478.3902886249. The cubic root of 12099199 is about 229.5719764812.

The spelling of 12099199 in words is "twelve million, ninety-nine thousand, one hundred ninety-nine".