12204444321 has 12 divisors (see below), whose sum is σ = 17632822948. Its totient is φ = 8134366464.

The previous prime is 12204444319. The next prime is 12204444331. The reversal of 12204444321 is 12344440221.

12204444321 is a `hidden beast` number, since 1 + 220 + 4 + 4 + 4 + 432 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1793099025 + 10411345296 = 42345^2 + 102036^2 .

It is not a de Polignac number, because 12204444321 - 2¹ = 12204444319 is a prime.

It is a super-2 number, since 2×12204444321² (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 (12204444331) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120220 + ... + 197133.

Almost surely, 2^12204444321 is an apocalyptic number.

It is an amenable number.

12204444321 is a deficient number, since it is larger than the sum of its proper divisors (5428378627).

12204444321 is a wasteful number, since it uses less digits than its factorization.

12204444321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321632 (or 321629 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 12204444321 its reverse (12344440221), we get a palindrome (24548884542).

The spelling of 12204444321 in words is "twelve billion, two hundred four million, four hundred forty-four thousand, three hundred twenty-one".