12720033 has 12 divisors (see below), whose sum is σ = 18764928. Its totient is φ = 8299320.

The previous prime is 12720011. The next prime is 12720047. The reversal of 12720033 is 33002721.

It is not a de Polignac number, because 12720033 - 2⁹ = 12719521 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12719988 and 12720015.

It is not an unprimeable number, because it can be changed into a prime (12720073) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14613 + ... + 15458.

It is an arithmetic number, because the mean of its divisors is an integer number (1563744).

Almost surely, 2^12720033 is an apocalyptic number.

It is an amenable number.

12720033 is a deficient number, since it is larger than the sum of its proper divisors (6044895).

12720033 is a wasteful number, since it uses less digits than its factorization.

12720033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30124 (or 30121 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 12720033 is about 3566.5155263927. The cubic root of 12720033 is about 233.4332658114.

Adding to 12720033 its reverse (33002721), we get a palindrome (45722754).

The spelling of 12720033 in words is "twelve million, seven hundred twenty thousand, thirty-three".