12099971 has 8 divisors (see below), whose sum is σ = 13797504. Its totient is φ = 10512000.

The previous prime is 12099959. The next prime is 12099991. The reversal of 12099971 is 17999021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12099971 - 2⁶ = 12099907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12099911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27155 + ... + 27596.

It is an arithmetic number, because the mean of its divisors is an integer number (1724688).

Almost surely, 2^12099971 is an apocalyptic number.

12099971 is a deficient number, since it is larger than the sum of its proper divisors (1697533).

12099971 is a wasteful number, since it uses less digits than its factorization.

12099971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54781.

The product of its (nonzero) digits is 10206, while the sum is 38.

The square root of 12099971 is about 3478.5012577258. The cubic root of 12099971 is about 229.5768590578.

The spelling of 12099971 in words is "twelve million, ninety-nine thousand, nine hundred seventy-one".