12204021024 has 144 divisors (see below), whose sum is σ = 39342139200. Its totient is φ = 3557426688.

The previous prime is 12204021017. The next prime is 12204021029. The reversal of 12204021024 is 42012040221.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12204020988 and 12204021006.

It is not an unprimeable number, because it can be changed into a prime (12204021029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14644 + ... + 156915.

It is an arithmetic number, because the mean of its divisors is an integer number (273209300).

Almost surely, 2^12204021024 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12204021024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19671069600).

12204021024 is an abundant number, since it is smaller than the sum of its proper divisors (27138118176).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12204021024 is a wasteful number, since it uses less digits than its factorization.

12204021024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171607 (or 171596 counting only the distinct ones).

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

Adding to 12204021024 its reverse (42012040221), we get a palindrome (54216061245).

The spelling of 12204021024 in words is "twelve billion, two hundred four million, twenty-one thousand, twenty-four".