12044421 has 6 divisors (see below), whose sum is σ = 17397510. Its totient is φ = 8029608.

The previous prime is 12044413. The next prime is 12044441. The reversal of 12044421 is 12444021.

12044421 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 8381025 + 3663396 = 2895^2 + 1914^2 .

It is not a de Polignac number, because 12044421 - 2³ = 12044413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12044394 and 12044403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12044401) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 669126 + ... + 669143.

It is an arithmetic number, because the mean of its divisors is an integer number (2899585).

Almost surely, 2^12044421 is an apocalyptic number.

It is an amenable number.

12044421 is a deficient number, since it is larger than the sum of its proper divisors (5353089).

12044421 is a wasteful number, since it uses less digits than its factorization.

12044421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1338275 (or 1338272 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 12044421 is about 3470.5073116189. The cubic root of 12044421 is about 229.2249970452.

Adding to 12044421 its reverse (12444021), we get a palindrome (24488442).

It can be divided in two parts, 1204 and 4421, that added together give a square (5625 = 75²).

The spelling of 12044421 in words is "twelve million, forty-four thousand, four hundred twenty-one".