12003044421 has 32 divisors (see below), whose sum is σ = 16515104256. Its totient is φ = 7749632000.

The previous prime is 12003044413. The next prime is 12003044423. The reversal of 12003044421 is 12444030021.

It is a cyclic number.

It is not a de Polignac number, because 12003044421 - 2³ = 12003044413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12003044423) 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, 13623901 + ... + 13624781.

It is an arithmetic number, because the mean of its divisors is an integer number (516097008).

Almost surely, 2^12003044421 is an apocalyptic number.

It is an amenable number.

12003044421 is a deficient number, since it is larger than the sum of its proper divisors (4512059835).

12003044421 is a wasteful number, since it uses less digits than its factorization.

12003044421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1613.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 12003044421 its reverse (12444030021), we get a palindrome (24447074442).

It can be divided in two parts, 120030 and 44421, that added together give a triangular number (164451 = T₅₇₃).

The spelling of 12003044421 in words is "twelve billion, three million, forty-four thousand, four hundred twenty-one".