12204023421 has 8 divisors (see below), whose sum is σ = 16281427680. Its totient is φ = 8131317392.

The previous prime is 12204023417. The next prime is 12204023423. The reversal of 12204023421 is 12432040221.

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

It is a cyclic number.

It is not a de Polignac number, because 12204023421 - 2² = 12204023417 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12204023423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1168491 + ... + 1178888.

It is an arithmetic number, because the mean of its divisors is an integer number (2035178460).

Almost surely, 2^12204023421 is an apocalyptic number.

It is an amenable number.

12204023421 is a deficient number, since it is larger than the sum of its proper divisors (4077404259).

12204023421 is a wasteful number, since it uses less digits than its factorization.

12204023421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2349115.

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

Adding to 12204023421 its reverse (12432040221), we get a palindrome (24636063642).

The spelling of 12204023421 in words is "twelve billion, two hundred four million, twenty-three thousand, four hundred twenty-one".