12034721 has 2 divisors, whose sum is σ = 12034722. Its totient is φ = 12034720.

The previous prime is 12034709. The next prime is 12034723. The reversal of 12034721 is 12743021.

12034721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11560000 + 474721 = 3400^2 + 689^2 .

It is an emirp because it is prime and its reverse (12743021) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12034721 is a prime.

Together with 12034723, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 12034693 and 12034702.

It is not a weakly prime, because it can be changed into another prime (12034723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6017360 + 6017361.

It is an arithmetic number, because the mean of its divisors is an integer number (6017361).

Almost surely, 2^12034721 is an apocalyptic number.

It is an amenable number.

12034721 is a deficient number, since it is larger than the sum of its proper divisors (1).

12034721 is an equidigital number, since it uses as much as digits as its factorization.

12034721 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 12034721 is about 3469.1095399252. The cubic root of 12034721 is about 229.1634449060.

Adding to 12034721 its reverse (12743021), we get a palindrome (24777742).

The spelling of 12034721 in words is "twelve million, thirty-four thousand, seven hundred twenty-one".