12201899 has 4 divisors (see below), whose sum is σ = 12224136. Its totient is φ = 12179664.

The previous prime is 12201881. The next prime is 12201901. The reversal of 12201899 is 99810221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12201899 - 2⁸ = 12201643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12201829) 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, 10274 + ... + 11399.

It is an arithmetic number, because the mean of its divisors is an integer number (3056034).

Almost surely, 2^12201899 is an apocalyptic number.

12201899 is a deficient number, since it is larger than the sum of its proper divisors (22237).

12201899 is an equidigital number, since it uses as much as digits as its factorization.

12201899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22236.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 12201899 is about 3493.1216697962. The cubic root of 12201899 is about 230.2196955624.

The spelling of 12201899 in words is "twelve million, two hundred one thousand, eight hundred ninety-nine".