12133999 has 4 divisors (see below), whose sum is σ = 12339720. Its totient is φ = 11928280.

The previous prime is 12133997. The next prime is 12134011. The reversal of 12133999 is 99933121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99933121 = 1433 ⋅69737.

It is a cyclic number.

It is not a de Polignac number, because 12133999 - 2¹ = 12133997 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 (12133997) 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, 102772 + ... + 102889.

It is an arithmetic number, because the mean of its divisors is an integer number (3084930).

Almost surely, 2^12133999 is an apocalyptic number.

12133999 is a deficient number, since it is larger than the sum of its proper divisors (205721).

12133999 is an equidigital number, since it uses as much as digits as its factorization.

12133999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205720.

The product of its digits is 13122, while the sum is 37.

The square root of 12133999 is about 3483.3890107193. The cubic root of 12133999 is about 229.7918659001.

The spelling of 12133999 in words is "twelve million, one hundred thirty-three thousand, nine hundred ninety-nine".