12175033721 has 8 divisors (see below), whose sum is σ = 12606481920. Its totient is φ = 11744360208.

The previous prime is 12175033709. The next prime is 12175033723. The reversal of 12175033721 is 12733057121.

12175033721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12175033721 is a prime.

It is a super-2 number, since 2×12175033721² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12175033723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 161591 + ... + 224636.

It is an arithmetic number, because the mean of its divisors is an integer number (1575810240).

Almost surely, 2^12175033721 is an apocalyptic number.

It is an amenable number.

12175033721 is a deficient number, since it is larger than the sum of its proper divisors (431448199).

12175033721 is a wasteful number, since it uses less digits than its factorization.

12175033721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387343.

The product of its (nonzero) digits is 8820, while the sum is 32.

The spelling of 12175033721 in words is "twelve billion, one hundred seventy-five million, thirty-three thousand, seven hundred twenty-one".