12044721 has 32 divisors (see below), whose sum is σ = 18845568. Its totient is φ = 6773760.

The previous prime is 12044707. The next prime is 12044723. The reversal of 12044721 is 12744021.

It is a happy number.

It is not a de Polignac number, because 12044721 - 2¹¹ = 12042673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12044723) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24286 + ... + 24776.

It is an arithmetic number, because the mean of its divisors is an integer number (588924).

Almost surely, 2^12044721 is an apocalyptic number.

It is an amenable number.

12044721 is a deficient number, since it is larger than the sum of its proper divisors (6800847).

12044721 is a wasteful number, since it uses less digits than its factorization.

12044721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 12044721 is about 3470.5505326965. The cubic root of 12044721 is about 229.2269001927.

Adding to 12044721 its reverse (12744021), we get a palindrome (24788742).

The spelling of 12044721 in words is "twelve million, forty-four thousand, seven hundred twenty-one".